题目内容：

If you don't study hard,you will fail in the exam(同义句)
If you don't study hard,you won't be () to () the exam.

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正确答案是：
If you don't study hard,you won't be (able) to ( pass) the exam
.如果你不好好学习,你就不能通过考试.
【解析】： be able to do = succeed in doing = manage to do 成功地做成...
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