We shall start at seven if it _ by that time.A.will stop raining B.has stopped raining
问题描述：
We shall start at seven if it _ by that time.A.will stop raining B.has stopped raining
A.will stop raining B.has stopped raining C.will have stopped to rain D.stop to rain
答
B.has stopped raining能说一下为什么吗？主将从现中，说的“现”，不仅仅是一般现在时，而是现在时态，这里用了现在完成时也是现在时态，表示了将来完成时的意义。