【題目】—How many hours do you sleep every night?

—Eight. I think eight hours of sleep ________ enough for most kids.

A.isB.areC.wasD.were

【答案】A

【解析】

句意：——你每晚睡幾個小時？——八個。我想八小時的睡眠對大多數(shù)孩子來說已經(jīng)足夠了

考查系動詞。根據(jù)主句是一般現(xiàn)在時，從句介紹的是自己的看法，所以用一般現(xiàn)在時；表示時間的復數(shù)名詞作主語一般看成是單數(shù)，故選A。

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