All of us find ________ necessary to take exercise every day．

[　　]
A．

this

B．

that

C．

them

D．

it

答案：D
解析：

代詞的考查此處用it做形式賓語(yǔ)，而把真正賓語(yǔ)to take exercise every day放在后面，避免句子結(jié)構(gòu)頭重腳輕。


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