His essay, ____many times,was brief and to the point,and therefore won the first prize in the writing competition.
| A．polishing up |
| B．having polished up |
| C．to be polished up |
| D．having been polished up |
Li Ming won the first prize in the English speech contest and I’m glad that his efforts at last ____.
| A．paid off | B．worked out | C．got back | D．turned out |
Although the teacher did not mention any names, everybody knew who he was ____.
| A．attending to | B．turning to | C．referring to | D．talking to |
It ____ be our headmaster. He has gone to Beijing.
| A．mustn’t | B．won’t | C．may not | D．can’t |
---Would you like to go to the concert with me, Mary?
--- I have got no interest in it; ____, I have lots of homework to do.
| A．otherwise | B．besides | C．however | D．therefore |
Papermaking began in China and from here it ____ to North Africa and Europe.
| A．spread | B．grew | C．carried | D．developed |