1 . He spent 500 yuan on the bike. (改为同义句)
He ________ 500 yuan ________the bike.

2 . When I read interesting books, I often feel happy.
Reading interesting books often ________ me ________ ________.

3 . He spent one hour and a half playing computer games yesterday.
He ________ one hour and a half ________ computer games yesterday.

4 . Mr Smith collected cartoon stories twenty years ago.(改为现在完成时)
Mr Smith ________ ________ cartoon stories for twenty years.

5 . Her mother has been to Hong Kong several times. (对画线部分提问)
________ ________ her mother been to several times?

6 . John reached Paris yesterday. (同义句转换)
John ________ ________ Paris yesterday.

7 . We have already started to explore other planets. (改为一般疑问句)
________ you ________ to explore other planets ________?

8 . The students have cleaned their classroom.（改为否定句）
The students ________ ________ their classroom.

9 . Sam gave Lucy a nice book for her birthday last Sunday. （改为现在完成时）
Sam ________ ever ________ Lucy a nice book for her birthday.

10 . I hear that Mrs. Green has been in our school for five days. （改为同义句）
I hear that it is five days ________ Mrs. Green ________ to our school.