If you _____ smoke, please go outside because this is a non-smoking office.
| A．must | B．should | C．can | D．may |
Zhao Benshan, whose overwork ____ his health failure last year, is reported to have performed less successfully in the 2010 Spring Festival Gala on CCTV．
| A．submitted to | B．admitted to | C．devoted to | D．contributed to |
Whatever he explained, he couldn’t ____ the policeman that he was innocent．
| A．confirm | B．present | C．convince | D．admit |
You must attend the meeting ____ at ten o’clock, as it is scheduled—not a minute early or late．
| A．accurately | B．punctually | C．flexibly | D．approximately |
On the Eve of the Spring Festival, we Chinese people like to play with fireworks, and the noise doesn’t ____ until after midnight．
| A．die away | B．die off | C．die out | D．die down |
—Will you be____this afternoon, Jack?
—It depends．I’m afraid I’ll be called by my boss．
| A．available | B．accessible | C．convenient | D．suitable |