问题描述：
下面这道题为什么选B,说明理由.
Would you mind my changing the television to channel 5
A.Never mind B.No,not at all C.Excuse me.D.Yes,go ahead.
Would you mind my changing the television to channel 5
A.Never mind B.No,not at all C.Excuse me.D.Yes,go ahead.
问题解答：
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