Passengers on board aren’t allowed calls during take-off.
A. making or receiving
B. having made or received
C. to have made or received
D. to make or receive
网友回答
A. making or receiving
B. having made or received
C. to have made or received
(答案→)D. to make or receive
解析:allow sb to do sth这里是短语的被动形式,动词不定式的完成时表示它的动作在谓语动词之前发生,不符合句意,故选D。