1 

 —I think it’s very dangerous to drive six hours without a rest.

—I agree. Six hours           really a very long time.

A. has          B. is           C. were          D. am

 

【答案】

B

【解析】

試題分析：根據(jù)題干可知本句的意思應該是“六小時真的是很長的一段時間�！倍鴋as表示“有”，所以應該排除；通過意思，我們知道，此句是一般現(xiàn)在時，所以C是錯誤的；am用于I之后，所以D也是不對的。另外，當時間作主語是謂語動詞要用單數(shù)。所以本題選B。

考點：本題考查be動詞。

點評：在做本題時，應注意當時間作主語時，謂語動詞應該用單數(shù)；另外，還應注意句子的時態(tài)問題。

 

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