________ we do morning exercises every day _________ us a lot of good.
| A．If;do | B．That;do | C．Whether;does | D．That;does |
32. -----Is John coming by train?
-----He should, but he not. He likes driving his car.
| A．must | B．can | C．need | D．may |
31. They demanded that the books __to the school library at once.
| A．return | B．should return | C．be returned | D．would be returned |
30. He insisted on going abroad to have further study ____ his parents objection.
| A．by means of | B．in favour of | C．regardless of | D．on purpose of |
29. ____ time and labour, you should join hands ____ him in the business.
| A．To save; with | B．Saved; with  |
C．Saving; with | D．Having saved; by |
Many students signed up for the _____ race in the sports meeting to be held next week.w
| A．800-meter-long | B．800-meters- long | C．800 meter length | D．800 meters length |