问题 选择题

All passengers _______, please fasten your seat belts and remain seated _______ the plane is landing.

A.on board; until

B.abroad; since

C.on the board; before

D.aboard; when

答案

答案:D

题目分析:句意:所有机上的乘客,请系好安全带,当飞机着陆额时候仍然要坐着。on board 在此处相当于aboard,表示"在飞机上"。第二个空填when,指当飞机着陆的时候。选D。

单项选择题
填空题