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单项填空
①Only then how much damage had been
caused. （原创）
A. she
realized B. she had
realized
C. had she
realized D. did she realize
②
by keeping down cost will Power Data hold its advantage over other
companies.
（2010·01·安徽合肥高三检测）
Only B. Just C. Still D. Yet
①解析：选D。“only+状语”放在句首时，主句部分要用部分倒装，再根据时间then判断，主句应用一般过去时，所以选D。
②解析：选A。四个选项中，只有“only+状语”放在句首时，主句才用部分倒装。
Page No.488
15. For forty
years Jane Goodall has been outspoken about making the rest of
the world understand and respect the life of these animals.
40年来，简·古道尔一直在呼吁世人了解并尊重这些动物的生活。
本句用的是现在完成时，即“has/have been doing”，表示从过去某个时间开始的动作或状态一直延续到现在，可能还会再进行下去。
—What have you been doing?
你一直在做什么？
—I have been practising
the piano.
我一直在练习弹钢琴。
Page No.489
高手过招
单项填空
①—Hi,
Fracy, you look tired.
—I m tired. I
the living room all day.
Painted B. had painted
C. have been
painting D. have painted
②New that she is out of a job, Lucy going back to school, but she hasn’t decided yet.
A. had
considered B. has been considering
C. Considered D. is going to consider
①解析：选C。答句句意为：我一整天都在给起居室刷油漆。表示过去开始的动作一直持续进行到现在，用现在完成进行时。
②解析：选B。句意为：露西现在没有工作，她在考虑回学校，但她依然没有做决定。表示过去开始的动作一直持续进行到现在，用现在完成进行时。
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