was sooning - sooned 

was coming - came 

while => when 

was happening => happened 

drove => was driving 

since => when 

was going => went 

was => will (có was pick in nghiêng nguyên cụm k ta, nếu in nguyên cụm was pick thì sửa thành will be picking :D) 

comes => came 

another places => other places

1. The crowd was shouting excitedly when Nam was scoring => scored a goal

2. When the teacher was coming => came into the clssroom, we were discussing our poject

3. While her mother arrived => was arriving home, it was raining heavily

4. The accident was happening => happened when it got dark

5. I drove => driving to work when I suddenly met an old friend

6. We were watching Tv when the power was going out => went out.

7. I will pick you off => up at your hotel at 7o'clock tomorrow morning

8. My mother was preparing dinner when my father comes => came home

9. Yesterday when => while my father was visiting Nha Rong Harbor, I was going shopping

Xem vào sửa lại các câu sau cho đúng :

1. The crowd were shouting excitedly when Hong SOn was scoring=>scored o goal

2. They were playing football while their friends planted=>were planting trees in the garden

3. Her mother was arriving home while it rained=>is raining

4. Lan watched=>was watching a new film on TV at 8 o'clock last night

5. When the teacher was coming into the classroom , we discuss=>discussed about our mini - project

7. When=>While BA was winning the race , his friends cheered

8. It was starting raining when we were going=>went home

9. We slept=>were sleeping when somebody knocked at the door

10. The accident was happening when it was getting=>got dảk

1: were shouting => shouted, was scoring => scored

2: planted => were playing

3: arriving => arriving at, while => when

4: watched => was watching

5: was coming => came, discuss => were discussing

6:ran => was running

7: was winning => won

8: was starting => started

9: slept => were sleeping

10: was getting => got

15/ When I got up, it _________.

A. rains B. rained C. is raining D. was raining

16/ Mrs. Thu _________ the newspaper while her husband was watching T.V. A. was reading B. is reading C. reads D. read

17/ Mr. Quang fell over while he _________ basketball.

A. was playing B. is playing C. played D. plays

18/ When I came home, everybody _________ the television.

A. watched B. were watching C. was watching D. is watching

19/ My father _________ out when my sister arrived at the zoo .

A. goes B. have gone C. has gone D. had gone

20/ Alice _________ a Vietnamese person until he met Nam.

A. had never met B. have never met C. never met D. never have met

 1.Tommy asked the nurse how was his father doing.

-> how was his father doing  thành how his father was doing. 

2.I asked him to give me a ring when he has arrived home.

-> has thành had

3.Liesel wondered why her friend had acted strangely yesterday.

-> yesterday thành the previous day.

4.My mother told me to take care of my younger sister and don't make her cry.

-> don't thành not to.

5.Chris asked me If I was going to a downtown restaurant now.

-> now thành then.

Tìm lỗi sao

1. It was raining so heavily while we arrived => were arriving at the beach.

2. I was coming home this morning when i was seeing=>saw Kate waiting at the bus stop.

3. When he was calling=>called me, I was doing the cooking for dinner.

4. He putted =>put the letter on the table and then he go =went out to take a taxi.

5.While we talked=>were talking, someone in the same room was recording our conversation

6. While Hung was waiting at the airport, his family and close friends were waiting for him

7. Actually, during I came =>was coming to see you this morning, I just wanted you to help me.

8. We played some games, teaching => taught the disadvantaged children and gave clothes to them.

IV. Sửa lỗi sai trong những câu sau.

1. She read=> was reading newspaper when we came

2. What's => What was she doing at this time last week?

3. He is phoning his friends while we we're listening to radio=> the radio

4. The teacher talked => was talking when he ran in to

5. Was => Were they learning maths at 4p.m the day before yesterday

6. We played => were playing football when it started raining.

7. Where is => was she going at this time last week ?

8. She was washed => was washing the dishes when we arrived

1. Before she had watched TV, she had done her homework.

=> Had watched thành watched

2. Tom was seeing an accident while he was standing at the bus stop.

=> Was seeing thành saw

3. I read this novel several times.

=> Read thành have read

4. My mother sometimes buy vegetables at this market.

=> Buy thành buys