Choose the correct option (A, B or C) to complete each sentence.

here are the correct options for each sentence:

1. I was reading a book when the lights went out.

   • A) when

2. She cooked dinner while her brother was watching TV.

   • B) while

3. Call me when you reach home.

   • A) when

4. While I was sleeping, someone knocked at the door.

   • B) While

5. I met Ali when I entered the classroom.

   • A) when

6. Don't talk while eating food.

   • B) while

7. The baby cried when the mother left the room.

   • A) when

8. He listened to music while doing homework.

   • B) while

9. While I was walking to school, it started raining.

   • B) While

10. I smiled when I saw my friend.

    • A) when