B.three hours ago
A选项不能判定时态,而题中是过去时
C选项语法错误
D选项中before一般不被用于具体时间之后,大部分是作为连词用在句首或句中
希望可以帮到你.加油
I cleaned my classroom _ Awith there hours B.three hours ago C.in there hours D.there hours before
I cleaned my classroom _ Awith there hours B.three hours ago C.in there hours D.there hours before
英语人气:996 ℃时间:2019-08-23 09:37:24
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