Some of you may have finished Unit one. _________, you can go on with Unit two.
| A．If you may | B．If so |
| C．If not | D．If you do |
the coming English speech competition will be a lot of work, so I need some volunteers to help out.
| A．Organize | B．Organizing | C．Organized | D．Being organized |
Rock-climbing is a breathtaking activity, very popular nationwide among young people,
cooperation as well as courage plays an important role.
| A．who | B．which | C．that | D．where |
Your advice was a great help to us, without which all our efforts .
| A．wouldn’t pay off | B．hadn’t paid off |
| C．wouldn’t have paid off | D．didn’t pay off |
Many memories of old times were by the conversation we had together that evening.
| A．brought up | B．called up | C．kept up | D．set up |
Nearly all the people believe confidence is the key to success.
| A．interviewing | B．having interviewed |
| C．to interview | D．interviewed |