A：Do you know about All Fools' Day?你知道愚人节是怎么回事吗?
B：On that day,people play all kinds of tricks on others,and the one easily taken in is called April fool.那天人们互相捉弄，容易上当的叫四月傻瓜。
A：April fool!四月傻瓜!
B：April the first is coming.Be careful!四月一日就要到了，当心啊!