they () nothing to help the homeless girl during last three year.A) had done .B)have done .C)do
they () nothing to help the homeless girl during last three year.A) had done .B)have done .C)do
英语人气：196 ℃时间：2020-07-08 08:43:16
优质解答
选A during last three year“在过去的三年时间内”是表示过去的时间,因此应该选A
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