All passengers ______ are expected to fasten the seat belts when the plane takes off and lands.A.on

题目简介

All passengers ______ are expected to fasten the seat belts when the plane takes off and lands.A.on

题目详情


All passengers ______ are expected to fasten the seat belts when the plane takes off and lands.
A.on aboardB.on boardC.on the boardD.on boards
题型:单选题难度:偏易来源:不详

答案

B
考查短语搭配。句中on board为“在飞机上”之意。句意:当飞机起飞和降落的时候,所有的乘客都要求系上安全带。

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