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-Are you sure you have to? It’s been very late. -I don’t know I can do it if not

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-Are you sure you have to? It’s been very late. -I don’t know I can do it if not

34. -Are you sure you have to? It’s been very late.

-Idon’t know ________ I can do it if not now.

A.how

B.what

C.when

D.That

 

试题答案

【答案】

 C

【解析】略