下列不属于偷逃通行费的行为（）。

A、“倒货”

B、“换卡”

C、假轴

D、匀速直线

—I came to your home yesterday afternoon, but nobody was in.

— Oh, we ________ some shopping in the supermarket.[ ]

A. have done      

B. did  

C. were doing  

D. are doing