大单小单大双小双技巧

简介：The No. 6 bus had already left when Su Can arrived at the stop sign. He followed the bus and ran all the way to catch up with the bus. However, no matter how much he shouted from behind, the driver did not hear him and watched the bus disappear. At the corner of the street, Su Can could only curse a few words and angrily returned to the stop sign to wait for the next bus.