I don't know when ______.
| A．will the train leave | B．the train will leave |
| C．would the train leave | D．the train leave |
It’s difficult to live in a foreign country, if you can’t speak foreign languages.
| A．mainly | B．really |
| C．luckily | D．especially |
- Time is money.
- But I think time is _____money.
| A．as important as | B．more important than |
| C．so important than | D．the same as |
When winter comes, days get _____ .
| A．long and long | B．longer and longer |
| C．shorter and shorter | D．short and short |
There are ________ books in the National Library.
| A．twenty millions | B．twenty millions of |
| C．twenty million | D．twenty million of |
Listen! Someone_____ singing in the next room.
| A．is | B．are | C．does | D．do |