–Canyougoswimmingwithusthisafternoon? --Sorry,Ican...
来源：语文精选馆 3.02W
问题详情：
–Can you go swimming with us this afternoon?
--Sorry, I can’t. I _____ take care of my little sister at home because my mother is ill.
A. can B. may C. would D. have to
【回答】
D
知识点：情态动词
题型：选择题
