后牙牙槽嵴吸收较严重，为便于清洁，金一瓷桥的桥体与牙嵴的关系最好为()

A．盖嵴式

B．单侧接触式

C．鞍基式

D．船底式

E．悬空式

We ___________to get to the airport in time and got on the plane successfully.   [ ]

A. managed

B. tried

C. expect