______ you may have, you should gather your courage to face the challenge.
| A．However a serious problem |
| B．What a serious problem |
| C．However serious a problem |
| D．What serious a problem |
My favorite writer is Mo Yan, some of ________ novels have a surprising ending.
| A．whom | B．his | C．whose | D．Which |
It was a real race________time to get the project done. Luckily，we made it.
| A．over | B．by | C．for | D．Against |
The door________open，no matter how hard she pushed.
| A．shouldn't | B．couldn't | C．wouldn't | D．mightn't |
________ in the bank robbery, Tod was arrested by the local police early in the morning.
| A．Involving | B．Involved |
| C．To involve | D．To be involved |
My uncle hasn't been able to quit smoking，but at least he has ________.
| A．cut out | B．cut down | C．cut up | D．cut off |