._______ to reach them on the phone,we sent an email instead
A.Fail B.Failed C.To fail D.Having failed
请问不选A,B,C的原因分别是什么
人气：138 ℃ 时间：2019-09-29 01:38:22
解答
不选A,因为后面sent用了过去式,A是现在式当然排除,
不选B,后面sent已经是一般过去式,为了表示两个动作的前后关系,当然不能同时用一般过去时,
选C的话,这里To fail显然是表目的的了,不合句意,所以也吧 当选
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