— John, how did your English exam go?
— I thought I _____, but in fact I came in the top 10% in the class.
| A．should have failed | B．couldn’t have failed |
| C．might have failed | D．mustn’t have failed |
状语从句
（全国卷I 25）. Mary made coffee ________ her guests were finishing their meal.
A. so that B although C. while D. as if
.Teachers recommend parents their children under 12to ride bicycles to school for safety.
| A．not allow | B．do not allow | C．mustn’t allow | D．couldn’t allow |
. If he __________my advice, he wouldn’t have lost his job.
| A．followed | B．should follow | C．had followed | D．would follow |
.（湖南卷23）. You_________ buy a gift , but you can if you want to.
| A．must | B．mustn’t | C．have to | D．don’t have to |
. ---I haven’t got the reference book yet, but I’ll have a test on the subject next month.
---Don’t worry. You______ have it by Friday.
| A．could | B．shall | C．must | D．may |