15. (单选题) As days _________, a deep friendship began to develop between them. (本题3.0分)
A、 went by
B、 went in
C、 went pass
D、 went out
出自:河套学院-大学英语

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