(单选题) ______ Lin Feng has to work late, she always wears a smile on her face.( )(本题3.5分)
A、 Because
B、 If
C、 Until
D、 Though
出自:内蒙古农业大学-大学英语4

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