问题 选择题

—Did you return Fred's call?

—I didn't need to ________ I'll see him tomorrow.

A.though

B.unless

C.when

D.because

答案

答案:D

句意:——你给Fred回电话了吗?——我没必要,因为明天我要去见他。though虽然;unless除非;when当……时;because因为。

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