试题详情
- 单项选择题They have been waiting for many hours to see the singer, but the airplane must have been ____. ( 章节：2 难度：2)
A、off time
B、on time
C、ahead of schedule
D、behind schedule
- D
关注下方微信公众号，在线模考后查看
热门试题
A、off time
B、on time
C、ahead of schedule
D、behind schedule
关注下方微信公众号，在线模考后查看