________they decide which college to go to，students should research the admission procedures.
| A．As | B．While |
| C．Until | D．Once |
He was told that_____10:15 flight would take them to Shanghai in time to reach Fudan University.
| A．the; / | B．the; a | C．a; the | D．/; the |
I am late, ____?
| A．aren't I | B．aren’t you | C．are you | D．am i |
We used to have a discussion, ___?
| A．did you | B．didn’t we | C．used we | D．didn't used we |
I don't think you have eaten so many crisps ,____?
| A．do I | B．haven't you | C．have you | D．don't you |
A Kangaroo scarecely knew anything about it, __?
| A．didn't we | B．doesn't he | C．did he | D．does he |