Question

Put in 'mustn't' or 'don't / doesn't have to': 1) we have a lot of work tomorrow. you be late. 2) you tell anyone what i just told you. it's a secret. 3) the museum is free. you pay to get in. 4) children tell lies. it's very naughty. 5) john's a millionaire. he go to work. 6) i do my washing because my mother does it for me. 7) we rush. we've got plenty of time. 8) you smoke inside the school. 9) you can borrow my new dress, but you get it dirty. 10) we miss the train, because it's the last one tonight. 11) she do this work today, because she can do it tomorrow. 12) i clean the floor today because i cleaned it yesterday. 13) we forget to lock all the doors before we leave. 14) we stay in a hotel in l.