Exe 4.
1. began
2. am sweeping
3. was teaching
4. felt
5. fight
6. bought
7. have built
8. has lost
9. brings
10. tell
Exe 5.
1 , 9. when
2.5.8. since
3.6.7. ago
4.7. for
Exe 6.
2. The neighborhood has been cleaned up for 2 hours.
4. Vegetables are always chosen very carefully by Anna.
5. My motorbike was stolen by a thief last night.
6. Ao Dai is often worn by students in Ho Chi Minh city on Monday.
8. The party was held in their school 3 days ago.
Exe 7.
1. tutoring-helping
2. having-to pass
3. to help-to do
4. to join-speaking
5. carving-to carve
6. Making-to make
7. sleeping-to prepare
8. to have-to donate
Exe 8.
1. How often does John wear uniform to school ?
5. When did the film begin yesterday ?
7. When are you going to have a picnic ?
8. How does your mum go to work ?
9. Whose T-shirt is Bean trying on ?
10. Who are you going to camping with this weekend?
11. Why did your mom buy flour and eggs ?
Nhiều quá nên nhiều câu hơi dễ mình để lại T^T