问题补充:
I’m waiting for my friend. If he , I will go swimming alone.
A. doesn’t come
B. won’t come
C. will come
D. is coming
答案:
(答案→)A. doesn’t come
B. won’t come
C. will come
D. is coming
解析:if是“如果”的意思,引导是条件状语从句,其时态应该是“主将从现”,即主句用将来时,从句应该用一般现在时。故本空用一般现在时,只有A符合题意。所以本题选A。