II/ Make questions:

1) The library is free and open to all the pupils and teaching staff.
2) A large collection of books is kept for reading of reference.
3) Various books of fiction and non-fiction are kept on the shelves.
4) Mrs. Green helps the readers to use the card catalogue.
5) I often go to school library every Saturday.
6) They went to school by bus yesterday.
7) It was very hot last month.
8) I saw an accident when I was waiting for Mary.
9) My parents usually go to work at half past six.
10) John won't go to my birthday party because he is busy.

III/Passive voice:

1) People say that he is very intelligent.
2) He said that he would return the book to me next week.
3) They are setting up a new theatre.
4) Who wrote 'Gulliver's Travels'?
5) No one likes reading that book.
6) Did you give Lan an English-Vietnamese dictionary on her birthday?
7) I have seen that play three times.
8) You must give more care to your work.
9) Farmers cut rice during the harvest.
10) The factory is producing more and more pollution.