Hangzhou Metro Line 1 , into use in 2012, is expected to relieve the hea
题型：不详难度：来源：
Hangzhou Metro Line 1 , into use in 2012, is expected to relieve the heavy traffic in this city.y accepted by , 20113 years in| A．to be put | B．being put | C．having put | D．put |
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答案
| Ａ |
解析
| 考查不定式用法。这条路线的投入使用是将来的事情，所以使用不定式表示将要发生的事情，两者之间又形成被动的关系，所以用过去分词表示被动。 |
举一反三
The young lady prefers dressing up for a party to by others.| A．be noticed | B．noticing | | C．having been noticed | D．have been noticed |
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When _________ where he had put the book, he kept silent.| A．ask | B．asking | C．to ask | D．asked |
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__________ the experiment right, I tried again and succeeded.| A．Not having done | B．Having not done | C．Not doing | D．Not done |
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Ladies and Gentlemen, please remain until the plane has come to a complete stop. | A．seated | B．seating | C．to seat | D．seat |
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All flights___ because of the snowstorm, we decided to take the train. | A．were canceled | B．had been canceled | C．having canceled | D．having been canceled |
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