题目内容
You’ll fail your next English exam _______ you work harder from now on.
| A．if | B．whether |
| C．until | D．unless |
D
解析试题分析：句意：你下次英语考试会考砸的，除非你从现在开始更努力地工作。if如果，whether是否，until直到，unless除非。因此，选D。
考点：考查连词的用法。
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