Crossing the Street
练习内容
When Mario came to China for the first time, he couldn't cross the street.\nThere were too many cars, buses, and bikes.\nEven at the traffic lights, he was afraid to go.\nMario was smart. He waited un
When Mario came to China for the first time, he couldn't cross the street.\nThere were too many cars, buses, and bikes.\nEven at the traffic lights, he was afraid to go.\nMario was smart. He waited un