II.1. Lunch is being prepared in the kitchen by nick.
2. The situtation can't be changed.
3. A mail was sent me last week.
4. Tea can't be made with cold water.
5. The tyres of the car have to be repaired.
III.1. Offices in this building have good air conditioner.
2. Hoa selected go on business abroad.
3. Careful, you will be bitten by that dog.
4. Collect bank note from many countries is Minh's hobby.
5. They didn't go to the movie last night because it was too cold.
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