1. I _____called___________ (call) Mr Wilson at 9 last night, but he (not be)________wasn't_________at home. He (study) ___was studying____________ at the library

2. I _______didn't hear__________ (not hear) the thunder during the storm last night because I _____was sleeping___________ (sleep)

3. It was beautiful yesterday when we went for a walk in the park. The sun_______was shining_______(shine). The birds__were singing__________(sing)

4. My brother and sister ______were talking__________ (talk) about something when I _______walked_________ (walk) into the room.

5. Tom went to his friends ‘house, but the boys _______weren't____________ (not be) there. They (play)______were playing_______soccer in thevacant lot down the street.

6. The little boy ______fell_________ (fall) asleep while his mother___________was reading________ (read) him a story.

7. I really enjoyed my holiday last January. While it______was snowing_________(snow) in Iowa, the sun ___was shining___________ (shine) in Florida.

8. While Ted ______was shoveling_________ (shovel) snow from his driveway yesterday, his wife ____brought_____________ (bring) him a cup of hot chocolate.

9. John ___________had______ (have) a car accident last week. He ____________was driving______ (drive) down the street when suddenly a lorry _________hit_________ (hit) his car from behind.

10. Ten years ago, the government _____decided__________ (decide) to begin a food programme. At that time, many people in the rural areas ______were starving_________ (starve) due to several years of drought.

11. They _______were waiting____________(wait) for me when I ______arrived___________ at the station (arrive)

12. She ______was swimming__________ (swim) in the sea when I _______saw____________ her (see)

13. _________were __________they______playing___________(play) tennis when it _______started__________ raining (start)?

14. We _______were driving___________ (drive) home from the theatre when the police ____stopped______________(stop) us.

15. The wind _______was blowing___________ (blow) very hard when I _______went_________(go) out this morning.

                                               CHÚC BN HC TỐT 

                                                ( xin hay nhất ak )