—Has William finished writing his graduation paper yet?—I don’t know exactly，bu
题型：不详难度：来源：
—Has William finished writing his graduation paper yet?
—I don’t know exactly，but he __________all day.| A．is writing | B．has been writing | | C．was writing | D．wrote |
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答案
| B |
解析
| 表示“一整天都在做某事(此时该动作还没有结束)”要用现在完成进行时。 |
举一反三
When you come into the exhibition hall，you can see a large board with a notice on it，saying visitors__________not to touch the exhibits.| A．will request | B．request | | C．are requesting | D．are requested |
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SARS__________ in Hong Kong in the winter of 2002.| A．was broken out | B．was broke out | | C．broke out | D．was breaking out |
|
—The Chinese astronaut Yang Liwei is here already.
—I__________he__________until tomorrow.| A．think;is coming | B．thought;would come | | C．didn’t think;was coming | D．don’t think;will come |
|
The couple __________.I really don’t know why.| A．always quarrel | | B．are always quarreling | | C．have always quarreled | | D．have always been quarreled |
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—My sister finished school three years ago.
—What__________these years?| A．did she do | | B．has she been doing | | C．is she doing | | D．does she do |
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