C．If you like D．It’s up to you 【答案】A 【解析】略 91.
— Tom is never late for work. Why is he absent today ? — Something _______ to him. A．must happen B．should have happened C．could have happened D．must have happened 【答案】D 【解析】略 92.
The World Wide Web is sometimes jokingly called the World Wide Wait because it ______ be very slow.
A．should B．must C．will D．can 【答案】D 【解析】略 93.
Helen ______ go on the trip with us, but she isn’t quite sure yet. A．shall B．must C．may D．can 【答案】C 【解析】略 94.
— The woman biologist stayed in Africa studying wild animals for 13 years before she returned. — Oh, dear ! She ______ a lot of difficulties ! A．may go through B．might go through
C．ought to have gone through
D．must have gone through 【答案】D 【解析】略 95.
He paid for a seat, when he ______ have entered free. A．could B．would C．must D．need 【答案】A 【解析】略 96.
This cake is very sweet. You _____ a lot of sugar in it.
A．should put B．could have put C．might put D．must have put 【答案】D 【解析】略 二、其他 1.
He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside. A．should B．must C．wouldn’t D．can’t 【答案】B 【解析】略