问题
选择题
In most western countries on April Fool’s Day，people often play________ trick on each other；children especially have great________ fun.
A．a；a
B．the；the
C．/；a
D．a；/
答案
答案：D
考查冠词。play a trick on欺骗；fun作名词为不可数名词，故选D。
