____inthe queue for half an hour,Tom suddenly realized that he ha_英语解答

____inthe queue for half an hour,Tom suddenly realized that he had left his wallet at home
a:Towait
b:Have waited
c:Having waited
d:To have waited

人气：408 ℃　时间：2020-04-01 03:07:16

解答

C
wait的行为也是由Tom做得,并且两个动作是同时发生的.所以用进行时态的分词.