what is on television tonight.on television是什么意思

what is going on what is on? watching television is bad or good?i think watching televisio is bad because can broke your eyes what holiday is on december what is on the quilt what is on the table What hell is going on? What on earth is rap? What is on it?急 what is going on here what is happiness on earth? what is on duty today? what is happening on venus What is on your list What country is popular on Thanksgiving Day? What the hell is going on?是什么意思 tell me what is on your mind What is the biggest animal on earth?