They can see the words on the blackboard clearly,so they ()wear glasses.A.need to B.have toC.don't need D.don't have to

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They can see the words on the blackboard clearly,so they ()wear glasses.A.need to B.have toC.don't need D.don't have to

They can see the words on the blackboard clearly,so they ()wear glasses.A.need to B.have toC.don't need D.don't have to
They can see the words on the blackboard clearly,so they ()wear glasses.
A.need to
B.have to
C.don't need
D.don't have to

They can see the words on the blackboard clearly,so they ()wear glasses.A.need to B.have toC.don't need D.don't have to
D 没有必要

D

D don't have to 不必。如选C.此处need 是实意动词,要用 don't need to请把四个选项都说一下 谢谢 不懂A. ‘B 两个选项的意思是需要,题目的大意是他们能看清黑板上的字,所以不需要戴眼镜。所以AB不合适。C.选项的need 既可以作情态动词,又可以做实意动词,如果Need 是情态动词的话,就不能用don't 来否定,如果是实意动词的话,就不能跟动词原形连用,C选项...

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D don't have to 不必。如选C.此处need 是实意动词,要用 don't need to

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