Exercise 3:
1. martha was delivering the documents to the department
2. a french architeet was designing the palace
3. mr.brown was writing the report in his office at 8 p.m yesterday
4. peter was painting those windows blue
5. the chef engineer was instructing all the workers of the plant
6. they were not eating dinner at present
7. we were painting the gate white
8. you were not driving him home
9. he was feeding the dogs
10. she in typing the report in the office
Exercise 4:
1. beth has finished the report
2. nobody has taken my briefcase
3. she has already finished the report at noon
4. the police have arrested five suspects already
5. kerrie hasn't paid the bill yet
6. i have no longer eaten a hamburger
7. i have opened the present
8. they have not read the book since we returned
9. you have sent the parcel
10. she hasn't phoned him yet
11. the delegates had received the information before the recess
(giải giúp mình)

(CÂU BỊ ĐỘNG)
Exercise 1:
1. the company might develop a new procedure
2. the students would plant trees there
3. my mother must sell this house
4. they are going to decorate the room next week
5. she has to tell a story
6. the teacher is going to give a lesson
7. they may buy a new car next month
8. they can open the safe
9. you ought to water these plants once a week
10. they may discuss the problems again
Exercise 2:
1.fire destroyed that house completely
2. the students attended the lecture
3. the movie disappointed us very much
4. the police easily captured the thief
5. john returned the money last night
6. smoke filled the room very fast
7. bob took that book from the desk
8. they started a dancing class last week
9. mr.smith saw the accident on the street last night
10. the teacher returned our written work to us
Exercise 3:
1. martha was delivering the documents to the department
2. a french architeet was designing the palace
3. mr.brown was writing the report in his office at 8 p.m yesterday
4. peter was painting those windows blue
5. the chef engineer was instructing all the workers of the plant
6. they were not eating dinner at present
7. we were painting the gate white
8. you were not driving him home
9. he was feeding the dogs
10. she in typing the report in the office
Exercise 4:
1. beth has finished the report
2. nobody has taken my briefcase
3. she has already finished the report at noon
4. the police have arrested five suspects already
5. kerrie hasn't paid the bill yet
6. i have no longer eaten a hamburger
7. i have opened the present
8. they have not read the book since we returned
9. you have sent the parcel
10. she hasn't phoned him yet
11. the delegates had received the information before the recess
giải giúp mình với
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