--Couldyoujoinusthisafternoon?---Sorry,I
来源:国语帮 1.38W
问题详情:
--Could you join us this afternoon?
---Sorry, I _______. I take care of my little sister because my mother is out.
A. can’t; may B. couldn’t; have to C. can’t; have to D. couldn’t; may
【回答】
C
知识点:情态动词
题型:选择题