F-13:foot it 步行
A:Shall we take a bus to the Forest Zoo?
A:我们乘车去森林动物园好吗？
B:I think we'd better foot it since it's too crowded on the bus.
B:车上太挤了，我们最好步行。
A:OK. I agree with you.
A：好吧。我同意。
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