20．---It’s so late. Our son 　　　　be back!

--- Don’t worry. I dare say he 　　　　have some extra work to do.　　　

A．can ; must　 　 B．will ; might　　 　　　 C．should ; must　 D．must ; may

19．--So you missed the meeting.

---­­­____. I got there ten minutes before it finished.

A．No problem　　　 B．Not really　 　　 C．You bet　　　 　　　 D．Forget it

18．____ makes this shop different is that it offers more personal services.

A．What　　　 　 B．Who　 C．Which　　 　　　 D．Why

17．His ____ of too much time to sports leaves too little time for studying.

A．thirst　　　 　 B．anxiety 　　 C．devotion　 　　 D．perseverance　

16．It’s ____ kind of you to take so much trouble with me.

A．awfully　　 　　 B．foolishly　　 C．differently　 　 D．patiently　　　　　

15．He did everything for me that my father ____ if he had lived.

A．had done　　　 　　　　　　 B．would do　　　　　　　　 C．would have done　 　 D．did

14．As you worked late yesterday, you ____ have come this morning.

A．may not　　 　 B．can’t 　 C．mustn’t　　　　 D．needn’t

13．The best-seller, _______ as a surprise for her nephew, was lost in the mail.

A．intended　　 B．intending　 C．to be intended　 D．being intended