【題目】_____________ is necessary __________ he trains himself before the Guangzhou Marathon.

A. This, 不填 B. The, 不填

C. It, that D. This, that

【答案】C

【解析】

試題分析：句意:在廣州馬拉松比賽之前，他進行鍛煉是必要的。本句所使用的句型是it is necessary that…，做某事是有必要的。這里that 引導的是主語從句，不能省略；it 是形式主語。故選C。

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