【C12】A．all at onceB．once moreC．by and largeD．by and by

But once I made the decision, I went at it with all flags flying.（英译中)

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

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

【C12】A．betweenB．onC．inD．for

【C12】A．beforeB．unlessC．untilD．once

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