行人们在人行道上匆匆走过。
Pedestrians ___walk quickly on the sidewalk.
我送你到车站吧。
Let me ___walk you to the bus stop.
我们吃完晚饭后沿着河边散步。
We ___walked along the river after dinner.
她走在繁忙的街道上。
She is ___walking down a busy street.
我们计划这个周末去湖边散步。
We're planning to go ___walking by the lake this weekend.