On April 1st the westerners like to playon each other but they make sure that no one is hu

问题补充：

On April 1st the westerners like to playon each other but they make sure that no one is hurt.

A. games

B. fun

C. hobbies

D. jokes

答案：

A. games

B. fun

C. hobbies

(答案→)D. jokes

解析：名词辨析。A游戏；B快乐；C习惯，爱好；D玩笑；固定词组play jokes on…作弄…；句意：在4月1号，西方人喜欢相互作弄。但是他们一定是没有恶意的。故D正确。