________ has been mentioned above，continued chairman after he took a sip of coffee，________ the project must be carried out before spring flood comes.
| A．As；that | B．That；which |
| C．This；which | D．It；that |
The toughest thing about success is ________ you have to keep on being a success.
| A．why | B．when | C．what | D．that |
The influence of this book might not have been reaching so far, ________for Mr. William, who dared to publish it.
| A．if had it not been | B．is it not being | C．had it not been | D．its only having been |
–My TV set doesn’t work, the water tap is dripping and my car is still under repair!
–You sure ________ bad luck these days.
| A．had | B．will have | C．had had | D．are having |
At one time, she is fine, ________ at another, she is abnormal.
| A．and | B．or | C．but | D．so |
We could have done something meaningful in the time it ________ to watch that boring movie.
| A．has taken | B．took | C．had taken | D．takes |