Whitout you _____ us, we couldn't have done it.
A.helpedB.helpingC.being helpedD.having helped
人气：323 ℃ 时间：2020-04-22 13:22:55
解答
选 D
由时态判断 要用完成时态 然后由于前面的从句为独立主格结构 为主动 故为D
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