1.Hurry up, children! The school bus_ for uS.
B. is waiting A. waits
D. was waiting C. waited
出自:西安交通大学-土木工程-英语

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块