一Canyougotoseeafilmwithusthisevening? 一Sorry,Ican’t.I

问题详情：

 一Can you go to see a film with us this evening?

 一 Sorry, I can’t. I_____ take care of my little brother 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