— Do you have to take care of your mother at home ? — Yes I . A. do B. have to C. have

问题补充：

— Do you have to take care of your mother at home ? — Yes , I .

A. do

B. have to

C. have

D. shall

答案：

A. do

(答案→)B. have to

C. have

D. shall

解析：回答情态动词 have to 的一般问句时肯定用 have to 或 must , 否定用 don\t have to 或 needn\t。