We shall start at seven if it ___ by that time.
(A) will stop raining (B) stops to rain
(C) has stopped raining (D) will have stopped to rain
选哪个?并且详细说明一下!!!!
如果 (B) stops raining
又该怎么选?
如果B 是 stops raining 的话,还是要选 C。因为 从句中有 by + 时间,在by + 时间的句子中要用完成时态。