10. By the middle of the 21st century , the vast majority of the world’s populat

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10. By the middle of the 21st century , the vast majority of the world’s population ________ in cities rather than in the country.

A．are living

B．will be living

C．have lived

D．will have lived

答案

解析

略

举一反三

14. Many new games are designed on the computers all the time; people of all ages ______ these games.

A．are playing

B．had played

C．have been playing

D．Play

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44. He must be getting thin, for his trousers _____ badly like a flag in the wind.

A．are flowing

B．flow

C．flowed

D．have flowed

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171. We"ll hold a sports meet in our school if it __________ next weekend.

A．doesn"t rain

B．won"t rain

C．rained

D．is going to rain

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178. My brother has _____ the army for more than five years.

A．joined

B．been in

C．joined in

D．taken part in

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185. Hello! I_______ you _______ in London. How long have you been here?

A．don"t know…were	B．hadn"t known…are
C．haven"t known …are	D．didn"t know … were

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