Is Tom at school today No, He’s at home ______ he has a bad cold.( )
·because
·if
·until
·before
出自:延安大学会计学基础

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