题目内容
4.A set of keys on the desk.Some boxes on the desk,too.( )| A. | are,are | B. | is,are | C. | is,is |
分析 桌子上有一串钥匙,一些盒子也在桌子上.
解答 答案:B.考查系动词.句意"桌子上有一串钥匙,一些盒子也在桌子上.".is单数,are复数.第一个空,a set of keys一串钥匙,做主语,谓语动词用单数,因此用is.第二个空,主语boxes复数.因此用are.答案是B.
点评 考查系动词,is是单数,are是复数,am通常与I连用,要结合语境,选择合适用法,注意人称及主语的单复数变化.
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