I ________ my homework while my parents ________ TV at 9 last night.
| A．did; have watched | B．had done; were watching |
| C．was doing; were watching | D．would do; were watching |
— Where is your father now?
— I’m not sure. He be in the kitchen.
| A．must | B．may | C．can | D．need |
It’s difficult to live in a foreign country, if you can’t speak foreign languages.
| A．mainly | B．really |
| C．luckily | D．especially |
—Can you finish the work in an hour?
—____________.
| A．No problem | B．That’s all right |
| C．We don’t believe it | D．Good idea |
There are ________ books in the National Library.
| A．twenty millions | B．twenty millions of |
| C．twenty million | D．twenty million of |
It is going to be ________ tomorrow.
| A．snowy | B．to snow | C．snows | D．snow |