单项选择：
1. The flower is dead. I _________ it yesterday.
　　A. should water B. must water 
　　C. should have watered D. mustn’t have watered
2. What time ought I ______?
　　A. arrived B. arriving C. arrive D. to arrive
3. He _____ speak to his mother like that.
　　A. ought not to B. doesn’t ought to C. not ought to D. ought to not
4. I don’t think we’d beer _____ it any more.
　　A. discuss B. discussing C. to discuss D. discussed
5. You ought to _____ him, but you didn’t.
　　A. help B. helped C. helping D. have helped
6. I _____ you not to eat fruit that isn’t ripe in future.
　　A. advise B. suggest C. think D. consider
7. I suggest that he ____ plenty of water every day.
　　A. drink B. drinks C. would drink D. will drink
8. In some parts of that country, _____ died of that illness.
　　A. one lout ten children B. ten of one child
　　C. one child in ten D. one for ten children
9. Soon after the accident, ____ police were sent to the place to keep order.
　　A. score of B. scores C. 2 scores of D. scores of
10. The foods the Westerners eat are usually rich ___ fat, sugar and salt, but low ____ fibre.
　　A. at; at B. on; on C. in; in D. for; for
答案与解析：
1. C. 本句意为 “我昨天本来应该给花浇点水”, 致使花死去。
2. D. 3. A 4. A 
5. D. 本句意为 “你本来应该帮助他, 但你却没有这样做.”
6. A. advise sb.(not) to do sth. B,C 不用此句型, D 句意不符。
7. A. 这里suggest是“建议”之意，它的宾语从句的谓语动词应用虚拟语气，即可省略的should 加动词原形。
8. C. 每十个孩子中有一个应该表示为one in/out of ten children 或One child in/out of ten
9. D. score(二十) 常见的用法有: two score of police; two score and ten police; scores of police.
10. C. be rich/low in sth. (富/少含某物)这是固定搭配。