—Has Tom finished his task yet? —I’m not sure. But he _____ on it last week
A．was working
B．has been working
C．worked
D．had been working
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◎ 解析
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◎ 知识点
根据n多题专家分析，试题“—Has Tom finished his task yet?—I’m not sure. But he _____ on it last weekA．was workingB．has been workingC．workedD．had been working…”主要考查了你对 【一般现在时】，【将来进行时】，【过去完成进行时】，【过去将来时的被动语态】 等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。
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