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。