题目内容
12．A．The computer needs to be fixed．B．The computer is not put in a safe place．
C．Grading the papers should be easy with the help of the computer．
D．Some teachers prefer to go over the papers by hand．
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B．The computer is not put in a safe place．
C．Grading the papers should be easy with the help of the computer．
D．Some teachers prefer to go over the papers by hand．