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19.----Must I take a bus to your home ----No, you_______. It

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19.----Must I take a bus to your home ----No, you_______. It's just about 5 minutes’ walk
from here A .must not B.don't have to C.shouldn't D.don't need
为什么不能是D
19.----Must I take a bus to your home ----No, you_______. It
B
D选项可以说成needn't ,因为问句用的是情态动词,must,回答时否定回答只能是:don't have to 或 needn't .
再问: 如果一定要选D,而且不用needn‘t 那么 那个don’t need后面是不是还要跟些东西啊
再答: 加to .