科目: 来源:不详 题型:单选题
| A.is not polluted |
| B.would not be polluted |
| C.had not been polluted |
| D.would not have been polluted |
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科目: 来源:不详 题型:单选题
| A.Were | B.Should |
| C.Would | D.Will |
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科目: 来源:不详 题型:单选题
| A.had had | B.have had |
| C.could have had | D.could have |
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科目: 来源:不详 题型:单选题
| A.had happened; would have been |
| B.happened; would be |
| C.had happened; would be |
| D.happened; would have been |
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科目: 来源:不详 题型:单选题
| A.would have | B.had |
| C.had had | D.have |
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科目: 来源:不详 题型:单选题
| A.don’t remind | B.didn’t remind | C.haven’t reminded | D.hadn’t reminded |
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科目: 来源:不详 题型:单选题
| A.needn't do | B.needn't have done | C.don't need to do | D.didn't need do |
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科目: 来源:不详 题型:单选题
| A.will give | B.would have given | C.must give | D.should have give |
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科目: 来源:不详 题型:单选题
| A.would die | B.should have died | C.might die | D.might have died |
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科目: 来源:不详 题型:单选题
| A.would have attended | B.should attend |
| C.must have attended | D.would attend |
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