Complete the sentences with the correct modal verb: can, can't, must, mustn't, should, may, needn't, have to, doesn't have to. Use each modal verb only once. 1) I work in an office, so I ... know how to use a computer for my job. 2) You ... drive me to the station tomorrow. I'm leaving very early, so I've ordered a taxi. 3) The rules at our school are very strict. We ... chat in class and we ... do our homework every day. 4) Uniform is optional at our school, we ... wear it or wear our own clothes. 5) Mum, is it OK if I stay at Sarah's house on Saturday night? – No, you No, you ... stay there. We're going to London next weekend, remember? 6) Jane feels much better now, so she take medicine. 7) You ... go to bed in time if you want to feel good. 8) I'm not sure yet but I ... buy these clothes.