A cold joke about songs

The geography teacher asked the students, where does this river go?

A student suddenly stood up and sang: The river flows eastward.

The teacher ignored him and then said, how many stars are there in the sky?

That classmate sang again: the stars in the sky can participate in Beidou.

The teacher is short of breath: get out!

Student: Just leave.

The teacher said helplessly, are you sick?

Student: You have everything I have!

Teacher: Try again. .....

Student: shout when you see an uneven road!

Teacher: Do you believe I hit you?

Student: Do it when you should. ...

The teacher was angry: I told you to drop out of school!

Student: Rush into Kyushu!