If 引导的句子If he ( ) us ,we can't win the matchA.join B.won't join C.doesn't join D.is joining

问题描述:

If 引导的句子
If he ( ) us ,we can't win the match
A.join B.won't join C.doesn't join D.is joining

c

C 条件句要用现在时 代替将来时