—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 |
--Why do you choose to work in an international travel agency?
---Well, you know, English is my ________. So it is my best choice.
| A．strength | B．talent | C．ability | D．skill |
As time went by, the plan stuck ________ fairly practical.
| A．to prove | B．to proved | C．to proving | D．to proves |
Our manager ________ for Shanghai in a few days and he has asked me to find out when the earliest plane ________ next Wednesday.
| A．is leaving; takes off | B．will leave; is taking off |
| C．leaves; will take off | D．is to leave; is going to take off |
Stephen Hawking believes that the earth is unlikely to be the only planet _______ life has developed gradually.
| A．that | B．where | C．which | D．whose |
The sleeping baby would be scared _______ a sudden loud noise.
| A．was there | B．there was |
| C．should there be | D．there should be |