科目: 来源:不详 题型:单选题
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科目: 来源:不详 题型:单选题
| A.might have failed | B.could have failed |
| C.should have failed | D.must have failed |
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科目: 来源:不详 题型:单选题
| A.couldn't have come | B.needn't have come |
| C.shouldn't have come | D.mustn't have come |
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科目: 来源:不详 题型:单选题
| A.might | B.could |
| C.should | D.would |
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科目: 来源:不详 题型:单选题
| A.must | B.will |
| C.can | D.shall |
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科目: 来源:不详 题型:单选题
| A.should | B.must |
| C.would | D.might |
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科目: 来源:不详 题型:单选题
| A.might | B.must |
| C.may have | D.could have |
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科目: 来源:不详 题型:单选题
| A.must have reduced | B.should have reduced |
| C.may have reduced | D.could have reduced |
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科目: 来源:不详 题型:单选题
| A.could | B.might |
| C.shall | D.will |
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科目: 来源:不详 题型:单选题
| A.will | B.may |
| C.should | D.can |
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