(2011·天津高考)Passengers are permitted only one piece of hand luggage onto the plane.
A. to carry
B. carrying
C. to be carried
D. being carried
网友回答
(答案→)A. to carry
B. carrying
C. to be carried
D. being carried
解析：选A 考查非谓语动词。句意：乘客只允许携带一个手提行李箱登机。本句用的结构是sb.be permitted to do sth.，故选A项。