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20、________ by the beauty of its buildings on their previous visit, they decided to visit the small old town again.

A．Struck          B．To be struck         C．Having struck       D．Being struck

19、—________ do we still need to wait for the tickets?

—Maybe for another two hours. Look at the queue!

A．How often          B．How long            C．How soon         D．How much

18、I had no idea of the exact address of Xinhua High School ______ I was outside its front gate.

A．when           B．a(chǎn)fter          C．until          D．because

17、The twins’ voices sound quite different _____tone _______ the phone.

A．in, on           B．from, to         C．in, at          D．from, in

16、Professor Backman took up scientific research for decades, and this is ______ he devoted all his life to.

A．which            B．what           C．where           D．how

15、Strangely, the two men look _____ alike that nearly all the people think they are twin brothers.

A．too much          B．such much         C．much too          D．so much

14、Wang Lin failed to be admitted by Hong Kong University last year, and only then _________ the importance of English.

A．he finally realized                                  B．he had realized

C．had he realized                                  D．did he realize

13、—Jack, don’t just repeat what _____ teacher of our class has told us. Try to express yourself in your own words.

—OK. Er…, could I have _____ discussion with my classmates first?

A．the, the          B．a(chǎn), a         C．a(chǎn), the         D．the, a

12、—Look! I’m getting fatter and fatter. What can I do?

—________. Do more exercise and you will be all right.

A．Slow it down       B．Don’t worry        C．That’s right        D．Don’t mention it.

11、The city government is planning to build a factory to deal with the industry waste, but when and where to build it _______.

A．haven’t been decided                              B．a(chǎn)ren’t decided

C．hadn’t been decided                                D．hasn’t been decided