—What are they up to？It’s so noisy.
—Some students________a party.
| A．have had | B．are having | C．had had | D．were having |
— Oh no! We’re too late. The train _______.
— That’s Ok. We’ll catch the next train to London.
| A．was leaving | B．had left | C．has left | D．has been leaving |
Mark needs to learn Chinese _______ his company is opening a branch in Beijing.
| A．unless | B．until | C．although | D．since |
The room is empty except for a bookshelf _____ in one corner.
| A．standing | B．to stand | C．stands | D．stood |
I didn’t think I’d like the movie, but actually it _____ pretty good.
| A．has been | B．was | C．had been | D．would be |
-How far can you run without stopping?
-. I've never tried.
| A． | Don't mention it | B． | That's all right |
| C． | I have no idea | D． | Go ahead |