科目: 来源:不详 题型:单选题
| A.was | B.were | C.are | D.being |
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科目: 来源:不详 题型:单选题
| A.is ; to examine | B.are ; examine | C.is ; examined | D.are ; examining |
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科目: 来源:不详 题型:单选题
| A.has | B.have | C.are | D.is |
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科目: 来源:不详 题型:单选题
| A.What; is | B.What; are | C.How much; is | D.How much; are |
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科目: 来源:不详 题型:单选题
| A.didn’t; must have been playing | B.didn’t; must be playing |
| C.couldn’t; must have played | D.couldn’t; must be playing |
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科目: 来源:不详 题型:单选题
| A.are listening to | B.is listening to | C.are listening | D.is listening |
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科目: 来源:不详 题型:单选题
| A.is | B.was | C.are | D.were |
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科目: 来源:不详 题型:单选题
| A.sand; were | B.sand; was | C.sands; were | D.sands; was |
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科目: 来源:不详 题型:单选题
| A.percent; lives | B.percent; live | C.percents; live | D.percents; lives |
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科目: 来源:不详 题型:单选题
| A.is; four | B.are; four | C.is; five | D.are; five |
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