科目: 来源:不详 题型:单选题
| A.How to survive, is | B.How does he survive, are |
| C.How does he survive, is | D.How to survive, are |
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科目: 来源:不详 题型:单选题
| A.are | B.is | C.have | D.be |
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科目: 来源:不详 题型:单选题
| A.is to blame | B.are blamed | C.are to blame | D.is blamed |
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科目: 来源:不详 题型:单选题
| A.Three quarters; is | B.Three fourth; is |
| C.Three fourths; are | D.Three quarters; are |
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科目: 来源:不详 题型:单选题
| A.is; is | B.are; are | C.are; is | D.is; are |
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科目: 来源:不详 题型:单选题
| A.is; is | B.are; are | C.is; are | D.are; is |
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科目: 来源:不详 题型:单选题
| A.was; was | B.were; was | C.was; were | D.were; were |
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科目: 来源:不详 题型:单选题
| A.help | B.helped | C.helps | D.are helping |
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科目: 来源:不详 题型:单选题
| A.has been used | B.have been used | C.is used | D.are used |
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科目: 来源:不详 题型:单选题
| A.are going | B.were going | C.is going | D.was going |
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