He asked if we ____swim and offered to teach us if we____.
问题描述:
He asked if we ____swim and offered to teach us if we____.
A.can;will
B.could;would
C.can;won't
D.could;wouldn't
答
选B [他问我们是否会游泳,如果我们要的话,他愿意教我们.]
本题考察宾语从句,主句的动词是过去式,从句的动词也要用相应的过去形式.