一道高一英语选择题关于concentrate on和focused onWhen I came in,he was____his book.A.concentrating on B.contributed to C.burying on D.focused on求详解,谢蛤a~o(∩_∩)o

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一道高一英语选择题关于concentrate on和focused onWhen I came in,he was____his book.A.concentrating on B.contributed to C.burying on D.focused on求详解,谢蛤a~o(∩_∩)o
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一道高一英语选择题关于concentrate on和focused onWhen I came in,he was____his book.A.concentrating on B.contributed to C.burying on D.focused on求详解,谢蛤a~o(∩_∩)o
一道高一英语选择题关于concentrate on和focused on
When I came in,he was____his book.
A.concentrating on B.contributed to C.burying on D.focused on
求详解,谢蛤a~o(∩_∩)o

一道高一英语选择题关于concentrate on和focused onWhen I came in,he was____his book.A.concentrating on B.contributed to C.burying on D.focused on求详解,谢蛤a~o(∩_∩)o
A.concentrating on 是答案.
当我进来时,他正在聚精会神的看书.
首先,要用主动语态形式.所以,第二个答案,和第四个答案都是错误的.第三个答案要说 buried in.是固定说法.

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