**Correct:** The movie, which we watched last night, was very exciting. **Error:** "That" should be "which" in non-restrictive clauses.

**Correct:** The police were called when the alarm went off. **Error:** "Police" is plural and requires "were."

**Correct:** I saw the movie last weekend with my friends. **Error:** "Seen" should be "saw" in the simple past tense.

**Correct:** She was happier when she lived closer to her family. **Error:** "More" is redundant with the comparative "happier."

**Correct:** My friends and I are going to the mall later. **Error:** "Me" should be "I" as it’s the subject of the sentence.

**Correct:** I have an apple in my lunchbox. **Error:** "A" should be "an" because "apple" starts with a vowel sound.

**Correct:** The boy who’s playing outside is my little brother. **Error:** "Whose" should be "who’s," a contraction of "who is."

**Correct:** I received my driver’s license when I was 18 years old. **Error:** "Got" is informal and should be replaced with "received."

**Correct:** She drives to work every day in her new car. **Error:** "Drive" should be "drives" to match the third-person singular subject "she."

**Correct:** I don’t need any help with this project. **Error:** Double negatives ("don’t" and "no") create a positive meaning.

**Correct:** The students have been working hard to finish their project. **Error:** "Has" should be "have" to agree with the plural subject "students."

**Correct:** The team has won every game this season. **Error:** "Win" should be "won" in the present perfect tense.