Now everyone is concerned about how to conquer the economic crisis, __________is very important for us to preserve our standard of living．
| A．which success | B．its success |
| C．the success of which | D．the success of it |
When we were young, every evening my brother and I ______ stay at home waiting for our mother.
| A．would | B．might | C．should | D．could |
______ I’m well again, I can go on with my work.
| A．Even if | B．As though | C．Ever after | D．Now that |
The government has to close those small factories to prevent the water of the river ______.
| A．polluting | B．from polluting | C．being polluted | D．polluted |
We agreed to accept ___________ they thought was the best engineer.
| A．whatever | B．whomever | C．whichever | D．whoever |
------Would you mind me smoking here?
------- ______. It’s non-smoking area here.
| A．Yes, go ahead | B．I’m afraid I’ve to say yes |
| C．No, please | D．No, you can’t |