Three things you have to do if you want to improve your English
Three things a teacher has to do before a class
Three things you wish you didn't have to do
Three things you mustn't do in class
Three things you had to buy last week
Three things you have to do if you have a pet
Three things you mustn't do in a restaurant
Three things you can't do in a library
Three things you had to do last week
Three things you mustn't do in a cinema
Three things you didn't have to do when you were young
Three things you can't do before you are 18 years old
Three things you don't have to do if you shop online
Three things you mustn't do when you are driving a car
Three things you have to do after class
Three things you have to take with you if you go abroad
Three things you must do if you want to lose weight
Three things you have to do in the morning
Three household chores you have to do but you hate
Three things you don't have to do when you are on holiday
Three things you must do before you get on an airplane
Three things you have to do every day