A.was doing | B.am doing |
C.have done | D.had been doing |
科目:高中英语 来源:不详 题型:单选题
A.have played | B.play | C.are playing | D.is playing |
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科目:高中英语 来源:不详 题型:单选题
A.have produced | B.have been produced |
C.are producing | D.are being produced |
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科目:高中英语 来源:不详 题型:单选题
A.remains to do | B.is remained to do |
C.remains to be done | D.is remained to be done |
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科目:高中英语 来源:不详 题型:单选题
A.works | B.worked | C.have been working | D.had been working |
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科目:高中英语 来源:不详 题型:单选题
A.saves | B.saved | C.will save | D.will have saved |
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科目:高中英语 来源:不详 题型:单选题
A.had given, lost | B.has given, lost | C.gave, have lost | D.has given, have lost |
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科目:高中英语 来源:不详 题型:单选题
A.have never tried | B.has never tried | C.have never been tried | D.has never been tried |
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科目:高中英语 来源:不详 题型:单选题
A.has discovered | B.have discovered |
C.has been discovered | D.have been discovered |
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