—What would you wish to do if you were a college student again—That.s very hard to say, but I wish I _______ wheI was a college student.( )
·has not studied biology
·did study biology
·had studied biology
·studied biology
出自:佳木斯大学语言治疗学

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