—— Why? Tom, your shirt is so dirty! —— Mum, I ＿＿＿＿＿ my storeroom downstairs。A．c
题型：不详难度：来源：
—— Why? Tom, your shirt is so dirty!
—— Mum, I ＿＿＿＿＿ my storeroom downstairs。| A．cleaned | B．have worked | C．was cleaning | D．have been cleaning |
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答案
| D |
解析
| 现在完成进行时表示从过去某时到现在一直在进行的动作。 |
举一反三
Computer cannot remember who _______; it simply does what _______.| A．has used it; it is told | B．will used it; it was told | | C．uses it; it has told | D．has used it; it told |
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John and I＿＿＿friends for eight years.We first got to know each other at a Christmas party.But we＿＿＿＿＿ each other a couple of times before that. | A．had been； have met | B．have been； have met | | C．had been； had met | D．have been； had met |
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—— What were you up to when your parents came in?
—— I＿＿＿＿＿for a while and＿＿＿＿＿some reading. | A．was playing； was going to do | B．played； did | | C．had played； was going to do | D．had played； did |
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—— Alice came back home the day before yesterday.
—— Really ? Where ＿＿＿＿＿ ? | A．has she been | B．had she been | C．has she gone | D．had she gone |
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When he was alive, the old scientist used to say that knowledge ＿＿＿＿from practice and he gained his experience by doing a lot of practical work. | A．was coming | B．had come | C．comes | D．would come |
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