Due to Tom’s joke the discussion and went on in a friendly atmosphere(气氛)。A. saw an endB

问题补充：

Due to Tom’s joke, the discussion and went on in a friendly atmosphere(气氛)。

A. saw an end

B. came to end

C. came to life

D. cheered up

答案：

A. saw an end

B. came to end

(答案→)C. came to life

D. cheered up

解析：came to life 表示生机勃勃，活跃起来