7.(4分)Being with his family for a few days I gained one or two insights ________ the reason he behaves the way he does.
A. have
B. am having
C. do have
D. had
出自:兰州大学大学英语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