Staff remaining in the lounge should notify their immediate supervisors before_______to their work.

admin2011-03-11  31

问题 Staff remaining in the lounge should notify their immediate supervisors before_______to their work.

选项 A、returning
B、returns
C、returned
D、to return

答案A

解析 空格内应填入非谓语动词。由于before是连词,后面填入分词形式的A选项或C选项都有可能。这个分词用来修饰主句中的主语staff,而staff是return to their work的行为主体。因此主动语态的A选项是正确答案。
转载请注明原文地址:https://kaotiyun.com/show/0fid777K
0

最新回复(0)