I can't use your pen, there is no ink in it.A. forB. whenC. ifD. whether

发布时间：2020-08-16 08:00:16

I can't use your pen,      there is no ink in it.                  
A. for
B. when
C. if
D. whether

网友回答

(答案→)A. for
B. when
C. if
D. whether
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