问题
选择题
51. Don’t put your cell (手机) _____ the edge of the table, or it will fall off
A．at
B．on
C．to
D．In
答案
答案：A
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51. Don’t put your cell (手机) _____ the edge of the table, or it will fall off
A．at
B．on
C．to
D．In
答案：A