问题: 英语
Since the ground is wet ,it ____last night.
A must have rained B had rained
C rained D must rain
解答:
Since the ground is wet ,it ____last night.
A must have rained
补充楼上的,由Since (自从,如是因为原因除外)引导的从句,全部是完成时态。但取决于后面的时间,是现在完成,还是过去完成。
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