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高一英语单选2.The heavy box ___ there three days ago by me is stil

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高一英语单选
2.The heavy box ___ there three days ago by me is still there.
A .lain B.lying c.lied D.laid
为什么选D
1.___ they visited the science museum,they showed great interst in everything they saw.
A.The first time B.For the first time C.At first D.At the first time
为什么选A
2 动词原形是lay,过去式是laid 我三天前放在那儿的箱子还在那里.
1.A.The first time 起连接俩个句子的作用相当于连接词.这是个并列句