A.becomes | B.became | C.has become | D.had become |
科目:高中英语 来源:不详 题型:单选题
A.has been polluted | B.were polluted |
C.is polluted | D.was polluted |
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科目:高中英语 来源:不详 题型:单选题
A.has; are | B.have; is |
C.has; is | D.have; are |
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科目:高中英语 来源:不详 题型:单选题
A.are | B.was | C.is | D.were |
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科目:高中英语 来源:不详 题型:单选题
A.is | B.are | C.was | D.were |
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科目:高中英语 来源:不详 题型:单选题
A.are speaking | B.is speaking |
C.were making a speech | D.have a speech |
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科目:高中英语 来源:不详 题型:单选题
A.is | B.are | C.has been | D.have been |
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科目:高中英语 来源:不详 题型:单选题
A.should | B.must | C.should have | D.must have |
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科目:高中英语 来源:不详 题型:单选题
A.play | B.are playing | C.plays | D.is playing |
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