Last night, your mobile phone was always busy. I couldn’t ______ to you after several attempts.
| A．go over | B．get through | C．get along | D．go through |
Would it be _____ for you to join us in raising money for the worst-hit area in the earthquake tomorrow?
| A．available | B．convenient | C．free | D．reliable |
He didn’t make good preparations for the English speech competition and had to _____ at the last moment.
| A．back out | B．turn off | C．carry on | D．pull down |
. She _____ on this essay for twenty minutes but she has written only about a hundred words.
| A．will be working | B．worked | C．has been working | D．will have worked |
A cartoon series on Confucius was aired on TV, _____ the thinker was a 10-year-old boy, not an old man.
| A．from which | B．in which | C．from it | D．in it |
27. The famous star _____ in the gym several hours every day to keep fit.
| A．takes up | B．turns out | C．gives away | D．works out |