问题 选择题

Tom's mother kept telling him that he should work harder,but ________ didn't help.

A.he

B.which

C.it

D.none

答案

答案:C

句意:汤姆的母亲不断地告诉他应该更加努力地学习,可是没用。此处it didn't help意为“没有,不奏效”。it指代前面的内容。

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