Modal verbs (have to, don't have to, must, mustn't)

Master modal verbs: have to, don't have to, must, mustn't! Practice obligation & prohibition.

1 Fill in the blanks with must or mustn't! I am ill. I must see the doctor. Look at he clouds. You must take an umbrella. You mustn't throw litter in the streets. I must go to bed earlier. Students must come to class on time We mustn'ttalk during the test. 2 Read the sentences and tick the correct form of HAVE TO We _ disturb classes. must mustn't don't have to We _ come to school on Sunday. must mustn't don't have to We _ do our homework and hand in Wizer sheets. must mustn't don't have to We _ wear school uniforms. must mustn't don't have to doesn't have to We _ skip classes. must mustn't don't have to have to I _ get up early to come to school on time. have to has to don't have to mustn't I _ go to bed early if I don't want to be tired in the morning. has to have to must't doesn't have to 3 Fill in the text with have to, has to, don't have to, doesn't have to, had to, didn't have to I have to wash the dishes every morning. (If I don't, my mum gets angry) We don't have to get there on time. The boss is away today so we can be late. Yesterday I had to finish my geography project. Do you have to work next weekend? He has topass his exams or the university will not accept him. I have to arrive at work at 9 sharp. My boss is very strict. I had to drive to work last year because I lived far from work. I didn't have to get up early yesterday because it was Sunday and I was at home all day. My mother doesn't have to get up too early,because she doesn’t work. You don't have to wear school uniform in this school. It is not necessary. I had to make a cake yesterday as it was my son’s birthday. David didn't have to finish the history project last week because he was at the hospital. My sister doesn't have to do any household chores. She is only 3 years old.