My mother is ill. I _______stay at home and look after her.

题目

My mother is ill. I _______stay at home and look after her.
　　A. has to B. must C. would D. have to
答案选D 我觉得B也可以啊.

答案

have to和 must 都有必须的意思.但是have to 和must的区别在于,have to 是不得不,经常有必须这样,别无选择,而must更偏向主观意愿.
妈妈病了,所以我不得不留家里照看她
所以选D