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.

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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.
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.

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.
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

D. have to
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

must表示有命令的语气在里面,而have to 没有

must是主观原因, have to是客观原因。了解了吗?