填空题

The computer isn’t working properly; ________________________(肯定有什么地方出了毛病).

【参考答案】

something must have gone wrong

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填空题

_______________________ (这是一个生死攸关的问题) and therefore we must pay more attention to it.

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______________________________________________ (幸亏遇到一位好心的出租车司机), Amy arrived at the test room in time.