As we all know，tigers and cats________the same family of beasts.
| A．belonged to | B．are belonged to |
| C．belong to | D．are belonging to |
（北京卷28）. It took me a long time before I was able to fully appreciate what they __ for me.
| A．had done | B．did | C．would do | D．were doing |
（北京卷26）. --I'm sorry, but I don't quite follow you. Did you say you wanted to return on September 20?
--Sorry, I myself clear. We want to return on October 20.
| A．hadn't made | B．wouldn't make | C．don't make | D．haven't made |
.（北京卷24）. --I'm not finished with my dinner yet.
--But our friends for us.
| A．will wait | B．wait | C．have waited | D．are waiting |
（北京卷22）. In the spoken English of some areas in the US, the "r" sounds at the end of the words .
| A．are dropped | B．drop | C．are being dropped | D．have dropped |
（安徽卷34）.----We’ve spent too much money recently.
----Well, it isn’t surprising. Our friends and relatives______ around all the time
| A．are coming | B．had come | C．were coming | D．have been coming |