(2010·福建高考)In April, thousands of holidaymakers remained ________ abroad due to the volcanic ash cloud.
A．sticking B．stuck
C．to be stuck D．to have stuck
(2011·上海高考)Today we have chat rooms, text messaging, emailing ... but we seem ________ the art of communicating facetoface.
A．losing B．to be losing
C．to be lost D．having lost
(2013·重庆高考)The engine just won't start.Something seems ________ wrong with it.
A．to go B．to have gone
C．going D．having gone
(2011·上海高考)It's no use ________ without taking any action.
A．complain B．complaining
C．being complained D．to be complained
(2012·浙江高考)No matter how bright a talker you are, there are times when it's better ________ silent.
A．remain B．be remaining
C．having remained D．to remain
(2013·福建高考)________basic firstaid techniques will help you respond quickly to emergencies.
A．Known B．Having known
C．Knowing D．Being known
