题目内容：

You ____to school tomorrow if you go to look after your mother in the hospital.选哪项填在空格处.
A don't head come B don't come C needn't to come D needn't come 请详细说明原因.

优质解答

D
need作为情态动词,后面跟动词原形,否定式为：needn't do
need作为实义动词,后面跟to do,其否定式为：don't need to do
根据本句的if条件句,应该是不必的意思.
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