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Before the flight takes off, all passengers(ask)______ to fasten their seat belt
Before the flight takes off, all passengers(ask)______ to fasten their seat belt
游客
2023-09-19
41
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问题
Before the flight takes off, all passengers(ask)______ to fasten their seat belts.
选项
答案
are asked
解析
本题考查的是谓语动词的时态。时间状语从句用before引导,而且从句谓语动词用了一般现在时,故主语不能用过去时态,而应用现在时态。在主句中用一般现在时,通常指现阶段已经计划好或安排好的情况。故可先确定ask用一般现在时。再看主语passengers与谓语ask之间的逻辑关系,应为被动关系。因此填areasked。
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