问题
选择题
______ in the chimney for five hours, the thief looked very pale and tired
A．Having been trapped
B．Being trapped
C．trapping
D．Having trapped
答案
答案：A
考查现在分词作状语。the thief与trap之间是被动关系，且分词的动作发生在谓语looked之前，故用现在分词的完成被动式，选A，句意：这个小偷被困在烟囱五个小时之后，看起来脸色苍白很疲倦。