—I remember you were a talented pianist at college. Can you play the piano for me?
—Sorry, I __________ the piano for years.
| A．don't play | B．wasn't playing |
| C．haven't played | D．hadn't played |
It is no use _________ to persuade him ________ smoking because he has been addicted to it since he was
young.
| A．trying, to quit | B．to try, to quit | C．to try, quit | D．trying, quit |
I would have come earlier, but I ________ that you were waiting for me.
| A．hadn’t known | B．didn’t know | C．would have known | D．haven’t know |
five hours to the meeting, David learnt that it had been postponed.
| A．Having driven | B．Driven | C．Being driven | D．To be driven |
9After the new technique was introduced，the factory produced ________ tractors in 1988 as the year before.
Written in a hurry, How can it be satisfactory?
| A．they found many mistakes in the report. |
| B．Sam made lots of mistakes in the report. |
| C．there are plenty of mistakes in the report. |
| D．the report is full of mistakes. |