How to write a good joke?

Jokes are very interesting. How can they look good?

The boss called his secretary: I will accompany you to Beijing to play these days. Please get ready.

The secretary called her husband: I'm going to Beijing to have a meeting with my boss these days.

Husband calls his lover: My wife is not at home these days, so she is with me.

My lover called my tutor: The teacher has something to do these days, and classes are suspended (taught by college students and writers).

The student called grandpa: there will be no class these days, so you can play with me.

Grandpa called his secretary: I can't go to Beijing, but my grandson wants me to accompany him.

The secretary called her husband: the boss suddenly had something to do and didn't go to Beijing for a meeting.

Husband calls his lover: My wife is not leaving, let's talk about it next time.

The lover called the tutor: classes will be held as usual these days! ! !

The student called grandpa: the teacher said that classes would be held as usual these days.

Grandpa called his secretary: Let's go to Beijing, you are ready! !

.

.

.

.

.