The question______new measures should be taken to control the terrible air pollution is______puzzles scientists a lot.
| A．that; what | B．which; that | C．what; what | D．which; that |
Having a trip abroad is certainly good for the old couple,but it remains___whether they will enjoy it
| A．to see |
| B．to be seen |
| C．seeing |
| D．seen |
This is the only one of the best films__this year
| A．have been shown |
| B．that have been shown |
| C．that has been shown |
| D．which has been shown |
This is one of the best films___this year
| A．that have been shown |
| B．that have shown |
| C．that has been shown |
| D．which has been shown |
How can you expect to learn anything___you never listen?
| A．in case |
| B．even if |
| C．unless |
| D．when |
___and I’ll get the work finished
| A．Have one more hour |
| B．One more hour |
| C．Given one more hour |
| D．If I have one more hour |