问题
选择题
(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
答案
答案：A
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。