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. shall
B. might
C. need
D. would
网友回答
(答案→)A. shall
B. might
C. need
D. would
解析：考查情态动词：句意：所有的乘客在坐下来后都要系好安全带。在飞行中不管系好安全带的灯是否是亮的安全带都要扣紧。Shall可以用于第二，三人称，表示“规定，命令，警告，允诺”，这里指航空公司的规定，might可能，need需要，would愿意，过去常常，选A。