Viết lại câu sao cho nghĩa không đổi

1 mary said to nam:"do you like my stamp collection ?
mary asked.......................
2 they published a lot of books in English last year
A lot of................
3 Tim keeps forgetting doing his homework
Tim is...............
 4 It is a festival in which people have their bulls fight against each other
It is a............
5 his hobby is to collect stamp
He is .........
6 My  sister is teaching my son English in the room now 
My son........