在下列省级行政单位中，既临渤海又临黄海的是[ ]
A、河北、江苏
B、北京、天津
C、辽宁、山东
D、吉林、辽宁
答案：C
Not until he left home ________ the importance of his family.
A．he realised
B．did he realise
C．he did realise
D．realised he
车库内车位已停满车辆，管理员应该怎么做？
