Nobody can explain the mystery ____ he suddenly disappeared. A．whyB．whatC．whethe
题型：不详难度：来源：
Nobody can explain the mystery ____ he suddenly disappeared. | A．why | B．what | C．whether | D．which |
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答案
| A |
解析
| 考查同位语从句，句意：没有人能解释这个谜，就是他为什么突然消失了。用why引导的从句解释前面的名词the mystery，所以选A。 |
举一反三
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