20．一I knocked over my tea cup．It went right over key board.一You shouldn’t put drinks near computer.A．the ; ／ B．the,a C．a(chǎn) ; / D．a(chǎn); a 【查看更多】

 

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一I knocked over my tea cup．It went right over        key board.

一You shouldn’t put drinks near        computer.

A．the ; ／    B．the；a     C．a(chǎn) ; /    D．a(chǎn); a

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