【C10】A．at bestB．at largeC．at onceD．at heart

Doctors decided to operate（) the wounded soldier at once.A withB onC inD at

【C12】______A．the bestB．at allC．withoutD．a good

【C10】A．towardB．withC．toD．at

A．InB．OnC．ByD．At

材料题请点击右侧查看材料问题 查看材料A.inB.onC.toD.at

We looked around: there was nothing but sand______.A．in sightB．at largeC．at a glanceD．in o