15.__________is very clear to everyone that he"s round and tall like a tree.16.A

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15.__________is very clear to everyone that he"s round and tall like a tree.
16.

A．This　　　

B．What　　　

C．That　　　

D．It

答案

解析

略

举一反三

19..Someone is at the door, who is_________?
20.

A．this　　　

B．that　　　

C．it　　　

D．He

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22. —Has the boy got his bicycle now?
23. 　—Yes, the police gave 　　.
24.

A．him to him

B．it to it

C．it to him

D．him to it

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25.Has __________been decided when we are to hold the sports-meeting?
26.

A．that　　　

B．this　　　

C．it　　　

D．what

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27.—Did Li Lei call me while I was out?
28.　—Yes, it was ____________that called you.
29.

A．him　　　

B．he　　　

C．who　　　

D．whom

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33.I don"t think_____________difficult for a Chinese student to master a foreign language within five years
34.

A．that　　　

B．it　　　

C．too　　　

D．very

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