You should understand the traffic rule by now. You’ve had it ________ often enough.
A．explaining
B．to explain
C．explain
D．explained
◎ 答案
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◎ 解析
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◎ 知识点
根据n多题专家分析，试题“You should understand the traffic rule by now. You’ve had it ________ often enough.A．explainingB．to explainC．explainD．explained…”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。
◎ 相似题
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