十六套单项选择

第一套

1.—He must be busy doing his homework right now.

   —I imagine____.

  A. that     B. to     C. so     D. it

  选C。I imagine so=I think so,

2. Mary had promised to give me a ticket for tomorrow. She failed, ____.

A. either    B. though    C. but    D. too

 选B。结合上下文意思我们可以知道本题表示转折关系，先排除A、D；而but为并列连词通常放在句首或句子中间起连接作用。故选B。

3. When I got to the cinema, the film _____ for five minutes.

A. had begun       B. has been on     

C. has begun       D. had been on

 选D。电影开始了五分钟，for five minutes为一段时间要求谓语动词要用延续性动词，故A和C先排除，而从句的动作发生在主句动作之后。

4.---I wonder why Mr Green hasn’t showed up at the meeting yet.