: Exercise 1: Chia dạng đúng của động từ trong ngoặc 1. When I (come) , she was cleaning the door. 2. When I (come) , she will be cleaning the door. 3. When he went home, his mother (cook) dinner, so he took off his coat to help her. 4. When he went home, his mother (cook) . so he had a delicious meal 5. When he went home, he (cook) because his wife were busy. 6. When he goes home, he (cook) dinner because he wants to make his wife surprised. 7. When he goes home, his mother (cook) because she always wants her son to have a delicious meal after a hard work day. 8. When I moved here, I (live) in a remote area for 5 years. 9. When she receives the letter, she (call) you. 10. When I was young, I (harbor) the dream of a famous doctor. sosososos