问题

_________ did you leave the classroom —___________ I saw my daughter sit down and read her book.
A: fter
B:When; Until
C:How long; Until
D:When; After
B:When; Until
C:How long; Until
D:When; After
正确答案是:
同类题型
the red switch on the left and the flyingmachine will swiftly go up into the air and itsjourney.
_______is known to all ,the Diaoyu Islandshave been part of Chinese territory since ancient times.
tried phoning her office,but I couldn’t ________.
When are you leaving for Beijing?—Tomorrow morningMy train _____ at 10:00 am
The shocking news made us realize ________ terrible problems we would face.