-_____you sing and dance at this late hour of the night?
-Sorry, I will stop right now.
| A．May | B．Shall | C．Will | D．Must |
It was a real race _______ time to get the project done. Luckily, we made it.
| A．over | B．by | C．for | D．against |
(2013·山东，28)________ I have to give a speech, I get extremely nervous before I start.
| A．Whatever | B．Whenever |
| C．Whoever | D．However |
I had hardly got to the office ______ my wife phoned me to go back home at once.
| A．when | B．than |
| C．until | D．after |
I have heard a lot of good things about you ________ I came back from abroad.
| A．since | B．until |
| C．before | D．when |
There's no way of knowing why one man makes an important discovery ________ another man, also intelligent, fails.
| A．since | B．if |
| C．as | D．while |