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All his attention _____ on the computer game, he even didn’t notice his mother enter the room. 

A. has been fixed  B. was fixing  C. was fixed    D. fixed

All his attention _____ on the computer game, he even didn’t notice his mother enter the room. 

A. has been fixed  B. was fixing  C. was fixed    D. fixed

 All his attention _____ on the computer game, he even didn’t notice his mother enter the room. 

A. has been fixed  B. was fixing  C. was fixed    D. fixed

All his attention____on the computer game, he even didn't notice his mother enter the room．

A．has been fixed        B．was fixing        C．was fixed         D．fixed

All his attention        on the computer game he was playing, so he even didn’t notice his mother enter the room.

A．has been fixed         B．was fixing        C．was fixed         D．fixed

31. All his attention______on the computer game, so he even didn't notice his mother enter the room.

31. All his attention______on the computer game, so he even didn't notice his mother enter the room.

     A. has been fixed   B. was fixing    C. was fixed        D. Fixed

31. All his attention______on the computer game, so he even didn't notice his mother enter the room.

All his attention　　　 on the computer game, so he even didn't notice his mother enter the room.

　　 A. has been fixed　 B. was fixing 　C. was fixed　　　 D. fixed