From December to February, school children in Costa Rica ______.( )(本题2.5分)
A、 have lessons every day
B、 have their examinations
C、 help their parents decorate their houses
D、 help their parents pick coffee beans
出自:西安石油大学-石油工程技术-大学英语I(上)

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