Поставьте must, mustn't, have to, don't have to или doesn't have to. 1) its a secret. you tell it to anyone. 2) you respect your parents. 3) she is very rich. she go to work. 4) this party is free. you buy any tickets. 5) this is the last bus for paris and we miss it. 6) you be on time for the exam. 7) they eat too much cake. 8) were going to the restaurant, so our mother cook tonight. 9) you forget to turn off the light before you leave. 10) its getting late. i think i go now. 11) boys and girls, you hand in your essays by thursday. 12) tom take a bus because his dad drives him to school every morning. 13) you tell me lies. it's just awful. 14) we tidy up our room because our sister did it yesterday. 15) you smoke on board the plane.
