| A.saw | B.has seen | C.sees | D.had seen |
科目:高中英语 来源:不详 题型:单选题
| A.is used; not to pollute | B.has used; is not polluted |
| C.is being used; do not pollute | D.has been used; to pollute |
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科目:高中英语 来源:不详 题型:单选题
| A.was looking | B.had looked | C.looked | D.is looking |
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科目:高中英语 来源:不详 题型:单选题
| A.will walk | B.will go on foot | C.walks | D.would go on foot |
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科目:高中英语 来源:不详 题型:单选题
| A.had wondered | B.was wondering | C.would wonder | D.did wonder |
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科目:高中英语 来源:不详 题型:单选题
| A.were waiting | B.had been waiting | C.had waited | D.would wait |
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科目:高中英语 来源:不详 题型:单选题
| A.isn’t | B.hasn’t been | C.hadn’t been | D.wasn’t |
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科目:高中英语 来源:不详 题型:单选题
| A.have lost | B.had lost | C.did lose | D.were losing |
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科目:高中英语 来源:不详 题型:单选题
| A.has he hidden | B.had he hidden | C.was he hidden | D.has he been hidden |
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