diff --git a/1-exercises/A-accessing-values/exercise1.js b/1-exercises/A-accessing-values/exercise1.js
index 67416c69..3ddf9c68 100644
--- a/1-exercises/A-accessing-values/exercise1.js
+++ b/1-exercises/A-accessing-values/exercise1.js
@@ -16,8 +16,8 @@ let dog = {
   Log the name and breed of this dog using dot notation.
 */
 
-let dogName; // complete the code
-let dogBreed; // complete the code
+let dogName = dog.name; //dot notation using objectName.propertyName
+let dogBreed = dog.breed; //dot notation using objectName.propertyName
 
 console.log(`${dogName} is a ${dogBreed}`);
 
diff --git a/1-exercises/A-accessing-values/exercise2.js b/1-exercises/A-accessing-values/exercise2.js
index 5b523ace..2754bd32 100644
--- a/1-exercises/A-accessing-values/exercise2.js
+++ b/1-exercises/A-accessing-values/exercise2.js
@@ -17,7 +17,7 @@ let capitalCities = {
 */
 
 let myCountry = "UnitedKingdom";
-let myCapitalCity; // complete the code
+let myCapitalCity = capitalCities["UnitedKingdom"]; // using bracket notation => objectName["propertyName"]
 
 console.log(myCapitalCity);
 
diff --git a/1-exercises/A-accessing-values/exercise3.js b/1-exercises/A-accessing-values/exercise3.js
index 2e160dd5..4539dde8 100644
--- a/1-exercises/A-accessing-values/exercise3.js
+++ b/1-exercises/A-accessing-values/exercise3.js
@@ -21,6 +21,14 @@ let basketballTeam = {
 */
 
 // write code here
+basketballTeam = basketballTeam["topPlayers"]; // using bracket notation => objectName["propertyName"]
+console.log(basketballTeam);
+
+basketballTeam.sort();
+console.log(basketballTeam); 
+
+let sortedbasketballTeam= [...basketballTeam].sort();
+console.log(sortedbasketballTeam); 
 
 
 /* EXPECTED RESULT
diff --git a/1-exercises/B-setting-values/exercise1.js b/1-exercises/B-setting-values/exercise1.js
index 7d0b05c5..0060be84 100644
--- a/1-exercises/B-setting-values/exercise1.js
+++ b/1-exercises/B-setting-values/exercise1.js
@@ -24,6 +24,12 @@ let capitalCities = {
 
 // write code here
 
+    capitalCities.UnitedKingdom.population = 8980000; // objectName.objectName.propertyName = "newValue";
+    capitalCities.China.population = 21500000;
+    capitalCities.Peru = {}; 
+    capitalCities.Peru.name = "Lima";
+    capitalCities.Peru.population = 9750000;
+
 console.log(capitalCities);
 
 /* EXPECTED RESULT
diff --git a/1-exercises/B-setting-values/exercise2.js b/1-exercises/B-setting-values/exercise2.js
index 59fb7c1e..13c59b16 100644
--- a/1-exercises/B-setting-values/exercise2.js
+++ b/1-exercises/B-setting-values/exercise2.js
@@ -16,6 +16,7 @@ let student = {
 */
 
 // write code here
+student["attendance"] = 90;
 
 /*
   - Write an "if" statement that changes the value of hasPassed to true
@@ -26,6 +27,9 @@ let student = {
 */
 
 // write code here
+if(student["attendance"] >= 90 && student["examScore"] > 60){
+   student["hasPassed"] = true;
+}
 
 console.log(student);
 
diff --git a/1-exercises/D-object-methods/exercise.js b/1-exercises/D-object-methods/exercise.js
index 0b57f2e1..54907982 100644
--- a/1-exercises/D-object-methods/exercise.js
+++ b/1-exercises/D-object-methods/exercise.js
@@ -8,11 +8,14 @@
 */
 
 let student = {
-  // write code here
-}
-
+getName: function (name) {
+    console.log("Student name:" +name);
+  },
+};
 student.getName("Daniel");
 
+
+
 /* EXPECTED RESULT
 
   Student name: Daniel
diff --git a/2-mandatory/1-recipes.js b/2-mandatory/1-recipes.js
index 6243fa9c..e23cdb36 100644
--- a/2-mandatory/1-recipes.js
+++ b/2-mandatory/1-recipes.js
@@ -21,5 +21,22 @@
 
   You should write and log at least 5 recipes
 */
-
-// write code here
\ No newline at end of file
+const recipes = [
+  {
+    title: "Mole",
+    servings: 2,
+    ingredients: ["cinnamon", "cumin", "cocoa"]
+  },
+  {
+     title: "Pancakes",
+    servings: 4,
+    ingredients: ["flour", "sugar", "baking powder", "salt", "milk", "eggs", "butter"]
+  }];
+  recipes.forEach(recipe => {
+  console.log(recipe.title);
+  console.log(`Serves: ${recipe.servings}`);
+  console.log("Ingredients:");
+  recipe.ingredients.forEach(ingredient => {
+    console.log(ingredient);
+  });
+  });
diff --git a/2-mandatory/2-currency-code-lookup.js b/2-mandatory/2-currency-code-lookup.js
index 5fde14f1..f142e8d7 100644
--- a/2-mandatory/2-currency-code-lookup.js
+++ b/2-mandatory/2-currency-code-lookup.js
@@ -19,8 +19,14 @@ const COUNTRY_CURRENCY_CODES = [
 
 function createLookup(countryCurrencyCodes) {
   // write code here
+    const lookup = {};
+  for (const [countryCode, currencyCode] of countryCurrencyCodes) {
+    lookup[countryCode] = currencyCode;
+  }
+  return lookup;
 }
 
+
 /* ======= TESTS - DO NOT MODIFY =====
 - To run the tests for this exercise, run `npm test -- --testPathPattern 2-currency-code-lookup.js`
 - To run all exercises/tests in the mandatory folder, run `npm test`
diff --git a/2-mandatory/3-shopping-list.js b/2-mandatory/3-shopping-list.js
index d25cb366..c097cbb4 100644
--- a/2-mandatory/3-shopping-list.js
+++ b/2-mandatory/3-shopping-list.js
@@ -20,6 +20,16 @@ let pantry = {
 
 function createShoppingList(recipe) {
   // write code here
+  const missingIngredients = recipe.ingredients.filter((ingredient) => {
+    return (
+      !pantry.fridgeContents.includes(ingredient) &&
+      !pantry.cupboardContents.includes(ingredient)
+    );
+  });
+   return {
+    name: recipe.name,
+    items: missingIngredients,
+  };
 }
 
 /* ======= TESTS - DO NOT MODIFY =====
diff --git a/2-mandatory/4-restaurant.js b/2-mandatory/4-restaurant.js
index d7b81eea..90155e18 100644
--- a/2-mandatory/4-restaurant.js
+++ b/2-mandatory/4-restaurant.js
@@ -20,8 +20,21 @@ const MENU = {
 };
 
 let cashRegister = {
-  // write code here
-}
+  orderBurger(balance) {
+    if (balance >= MENU.burger) {
+      return balance - MENU.burger;
+    } else {
+      return balance;
+    }
+  },
+  orderFalafel(balance) {
+    if (balance >= MENU.falafel) {
+      return balance - MENU.falafel;
+    } else {
+      return balance;
+    }
+  },
+};
 
 /* ======= TESTS - DO NOT MODIFY =====
 - To run the tests for this exercise, run `npm test -- --testPathPattern 4-restaurant.js`
diff --git a/2-mandatory/5-writing-tests.js b/2-mandatory/5-writing-tests.js
index 1443608b..e8542b74 100644
--- a/2-mandatory/5-writing-tests.js
+++ b/2-mandatory/5-writing-tests.js
@@ -35,7 +35,7 @@ function convertScoreToGrade(score) {
   passes.
 */
 test("a score of 83 is grade A", () => {
-  expect(convertScoreToGrade(83), "Z");
+  expect(convertScoreToGrade(83)).toEqual("A");
 });
 
 /*
@@ -43,33 +43,49 @@ test("a score of 83 is grade A", () => {
   write a matching test
 */
 
-test.skip("a score of 71 is grade B", () => {
+// test.skip("a score of 71 is grade B", () => {
   /* Remove the .skip above, then write the test body. */
-});
+// });
 /*
   Write a test that checks a score of 68 is grade C
+  
 */
-
+test("a score of 83 is grade A", () => {
+  expect(convertScoreToGrade(83)).toBe("A");
+});
 /*
   Write a test that checks a score of 55 is grade D
 */
-
+test("a score of 71 is grade B", () => {
+  expect(convertScoreToGrade(71)).toBe("B");
+});
 /*
   Write a test that checks a score of 68 is grade C
 */
-
+test("a score of 68 is grade C", () => {
+  expect(convertScoreToGrade(68)).toBe("C");
+});
 /*
   Write a test that checks a score of 55 is grade D
 */
-
+test("a score of 55 is grade D", () => {
+  expect(convertScoreToGrade(55)).toBe("D");
+});
 /*
   Write a test that checks a score of 49 is grade E
 */
-
+test("a score of 49 is grade E", () => {
+  expect(convertScoreToGrade(49)).toBe("E");
+});
 /*
   Write a test that checks a score of 30 is grade E
 */
-
+test("a score of 30 is grade E", () => {
+  expect(convertScoreToGrade(30)).toBe("E");
+});
 /*
   Write a test that checks a score of 70 is grade B
 */
+test("a score of 70 is grade B", () => {
+  expect(convertScoreToGrade(70)).toBe("B");
+});
\ No newline at end of file
diff --git a/2-mandatory/6-writing-tests-advanced.js b/2-mandatory/6-writing-tests-advanced.js
index 8d227e27..1724dbef 100644
--- a/2-mandatory/6-writing-tests-advanced.js
+++ b/2-mandatory/6-writing-tests-advanced.js
@@ -50,11 +50,13 @@ function formatCourseworkResult(trainee) {
 
 /*
   Write a test that checks the output of formatCourseworkResult when passed the following trainee:
-  {
-    name: "Xin",
-    score: 63
-  }
-*/
+  */
+    test("formatCourseworkResult returns correct output for trainee with score 63", () => {
+const trainee = {
+  name: "Xin",
+  score: 63,
+};
+    });
 
 /*
   Write a test that checks the output of formatCourseworkResult when passed the following trainee:
@@ -63,7 +65,12 @@ function formatCourseworkResult(trainee) {
     score: 78
   }
 */
-
+test("formatCourseworkResult returns correct output for trainee with score 63", () => {
+  const trainee = {
+    name: "Mona",
+    score: 78,
+  };
+});
 /*
   Write a test that checks the output of formatCourseworkResult when passed the following trainee:
   {