--There must be a dozen paper clips in these drawers but I can't find one when I need one. --Keep looking. is sure to turn up A. One B.It C.That D.This 查看更多

 

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—There must be a dozen paper clips in these drawers but I can’t find one when I need one.

—Keep looking      .is sure to turn up.

A.One         B.It         C.That       D.This

 

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