As we were asleep, ＿＿ of us heard the sound .
| A．both | B．none | C．all | D．any |
（2013·新课标Ⅱ卷) I was glad to meet Jenny again, I didn't want to spend all day with her.
| A．but | B．and | C．so | D．or |
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 |
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 |