—Did you have a good time yesterday Jane?─Yes as you know party went on in most pleas

问题补充：

—Did you have a good time yesterday, Jane?

─Yes, as you know, party went on in most pleasant atmosphere.

A. the; the

B. a; the

C. a; a

D. the; a

答案：

A. the; the

B. a; the

C. a; a

(答案→)D. the; a

解析：Did you have a good time yesterday, Jane?“昨天玩得高兴吗”

从这句可看出party 特指昨天的聚会。用the , a most pleasant atmosphere “一个另人高兴的氛围”