You won't pass your exams________ you work harder.
| A．when | B．if | C．unless | D．after |
I study for a test ___________ working with a group.
| A．in | B．by | C．on | D．with |
-- How does John usually go to school? --- He ________ ride a bike, but now he ________ there.
| A．used to; is used to walk |
| B．was used to; is used to walking |
| C．was used to; used to walk |
| D．used to; is used to walking |
---This pair of shoes ____ belong to Jack. He likes this kind very much.
--- It ____ be his. It’s too large for him.
| A．can; can’t | B．may; needn’t |
| C．must; mustn’t | D．must; can’t |
We are trying to help those children _____ lost their parents in Yushu, Qinghai Province.
| A．which | B．when | C．who | D．whose |
Flowers____________ along the road last year.
| A．plant | B．planted |
| C．are planted | D．were planted |