Ответ:

1) 1. is playing

2. did, buy

3. have, seen

4. go

5. had finished, went

2) 1. greater

2. most beautiful

3. biggest

4. wider

5. tall

3) 1. on

2. at

3. in, at

4. in

5. in, in

4) 1. Does his father leave his car in the street?

Where does his father leave his car?

Does his father leave his car in the street or in the garage?

Who leaves car in the street?

His father leaves his car in the street, doesn't he?

2. Do you have several thousands books in your home library?

What do you have in your home library?

Do you have several hundreds or thousands books in your home library?

Who have several thousands books in the home library?

You have several thousands books in your home library, don't you?

5) 1. Children are taught foreign languages at school.

2. He was offered some interesting work yesterday.

3. The letter will be answered tomorrow.

4. At the foot of the mountain we were joined by a group of tourists.

5. These books are sold everywhere.