缺失，牙根短，咬合关系好，哪种修复方案最好（）

A．固定桥

B．固定桥

C．固定桥

D．局部义齿

E．固定桥

He seemed to be looking for the words ____ he could express his idea.

A．for which

B．with which

C．in whom

D．in that