【題目】—Oh, my god. Jack didn’t pass the test again!

—He will fail again unless he ___________ hard, I think.

A. works B. work C. doesn’t work D. won’t work

【答案】A

【解析】句意:——哦,我的上帝。杰克又一次沒有通過考試!——他還會考試不及格,除非他努力學習,我認為。當主句是一般將來時,if/unless引導的條件狀語從句用一般現(xiàn)在時態(tài)表示將來,結(jié)合句意可知,unless引導的從句用肯定形式,故答案選A。

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