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王老师:19139051760(拨打)
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第1题

—Tom came back home yesterday.—Really? Where ________ at all? A.had he been B.has he been C.had he gone D.has he gon
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第2题

—Does Liu Hui serve in the army? —No, but he ________ in the army for three years. A.served B.has served C.is serving
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第3题

—Are you a teacher? —I ________, but now I am working in a company. A.is B.am C.was D.had
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第4题

The lower the temperature, the ____water vapour is required to saturate the air.. A.fewer B.fewest C.less D.least
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