=>
I/
1. cutting down
2. account for
3. throw away
4. use up
5. refers to

2/
1. unless
2. As/since
3. if
3/
1. Arlene Black who Guy invited onto his chat show never turned up.
2. The man whom you were talking to is a computer expert.
3. Dalat is a romantic city where my uncle lives.
4. Thiếu từ gợi ý

A disastrous earthquake struck Tokyo and Yokohama in 1923.

5. If Linh had her camera, she could take a photo.
6. Although Mr.Hung has a good salary, he feels unhappy.
4/
1. inexperienced
2.  priority
5/
1. What aboutt using energy-saving bulbs instead of 100-watt light bulbs?
2. Children like being received lucky money at Tet.
6/
1. If we pollutes the water, we won't have fresh water to use.
2. She hasn't been taken to the zoo by her father for two months.

I/
1. D âm câm còn lại /k/
2. C /d/ còn lại /t/
3. D /z/ còn lại /s/
4. C /e/ còn lại /ɪ/
5. A âm câm còn lại /b/

II/
1. written
2. were
3. was built
4. will have