—I’m sorry,but there’s no smoking on this flight.
—Oh,I _______ that.Sorry, I won’t again.
| A．don’t know | B．didn’t know |
| C．won’t know | D．haven’t known |
Quite a few problems_____ after the new examination system was introduced, and the number of students in this school _____by 5% Last year.
| A．arose; raised | B．arose; rose | C．rose; raised | D．raised; rose |
To his great surprise, John was elected___ chairman of _____ Students’Union.
A. a; a B. a; the c. the; the D. /; the
------ I heard that there were a lot of shouts and screams at yesterday’s party. It must have been terrible.
------- Oh, no. ________ , I enjoyed every minute.
| A．In the end | B．As a result |
| C．On the other hand | D．On the contrary |
Suspecting the traveler of carrying drugs, the Customs official stopped him and ______ suitcase, but found nothing at all.
| A．looked up | B．went through | C．searched for | D． referred to |
The old professor told us that every part of the materials should be made use of _____ the station.
| A．building | B．to build | C．build | D．being built |