All of the preparations for the lask ------been completed and we're ready to start.
All of the preparations for the task ------been completed and we're ready to start.
A.have B.has C.had 理由,应选什么,选B,好不好,为什么
人气：451 ℃ 时间：2020-04-09 13:07:51
解答
A
B和A只是个单复数的区别,句子主语是preparations,是复数,从此,谓语也应用复数形式
C项用了过去完成时,而从句子的后半句看,是现在时态,所以只能选A
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