( ) Must I visit my grandma first?-- No you ____ Amusn't B needn't C haven't D don't have to

问题描述:

( ) Must I visit my grandma first?-- No you ____ Amusn't B needn't C haven't D don't have to

正确答案:填【 B】
肯定回答must 的一般疑问句用must,而否定回答must 的疑问句用needn't,不必.而mustn't 是禁止的意思,与题意不符.另外 don't have to 不能作简略回答.
我必须首先要去拜访奶奶吗?
不,你不必.
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