____the working efficiency,the boss allows the employees to have a coffee break.
题型：不详难度：来源：
____the working efficiency,the boss allows the employees to have a coffee break.| A．Improving | B．To improve | | C．Having improved | D．Improved |
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答案
| B |
解析
| 考查非谓语动词的用法。根据题意可知，这里应用动词不定式表示目的。句意为：为了提高工作效率，老板同意职工喝杯咖啡休息一下。 |
举一反三
—What has made him upset recently?
—____alone to face a troublesome milk case.| A．Left | B．Being left | | C．Having left | D．To leave |
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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 |
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Exciting as its special effects are ____,there is too much violence in the film.| A．to watch | B．to be watched | | C．watching | D．being watched |
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Though a typhoon is on the way,people are still looking forward ____ the outdoor
concert by the pop singer.| A．to canceling | B．not to canceling | | C．not to cancel | D．to not canceling |
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—He didn’t feel a bit nervous when ____.
—No.He’d had a lot of time _____for it after all. | A．interviewing;to prepare | | B．interviewed;to prepare | | C．interviewing;preparing | | D．being interviewed;preparing |
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