Passengers _____ fasten their seat belts immediately after taking their seats. The belts should remain buckled during the flight whether or not the “fasten seat belt” light is on.

A.shallB.mightC.needD.would

A

解析試題分析:考查情態(tài)動(dòng)詞:句意:所有的乘客在坐下來后都要系好安全帶。在飛行中不管系好安全帶的燈是否是亮的安全帶都要扣緊。Shall可以用于第二,三人稱,表示“規(guī)定,命令,警告,允諾”,這里指航空公司的規(guī)定,might可能,need需要,would愿意,過去常常,選A。
考點(diǎn):考查情態(tài)動(dòng)詞

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