They have been waiting for many hours to see the singer, but the airplane must have been _____.
| A．behind the times | B．behind schedule |
| C．ahead of time | D．in no time |
The hero said he didn’t think twice ____ diving into the freezing river to rescue that child.
| A．before | B．after | C．until | D．when |
—Have you some new ideas?
—Yeah. I’ll tell you later.
| A．come about | B．come up |
| C．come out with | D．come up with |
A new stadium _______ next year, for an international tennis game will be held in this city.
| A．will build | B．will be built |
| C．has been built | D．has built |
Noise is unpleasant, ________ when you are trying to sleep.
| A．seriously | B．specially |
| C．especially | D．naturally |
It's quite warm here; we ________ turn the heating on yet.
| A．needn’t | B．mustn't |
| C．couldn’t | D．wouldn't |