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

Question

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

Answer 1

D

试题分析：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。