B Choose the correct words to complete the text.

I work as a receptionist in a big hotel, so I 11 must / mustn’t / can always be polite to the guests. During

the week, I 12 don’t have to / can’t / must go to bed late because I have to start work early. Fortunately, I 13

don’t have to / mustn’t / can’t wear a uniform, but I 14 can / mustn’t / have to dress smartly.

My sister’s a student, so she 15 mustn’t / doesn’t have to / can’t get up early most days. However, she

16 doesn’t have to / mustn’t / has to study very hard at the moment because she’s got important exams next

month.

My dad’s a taxi driver, so he often 17 has to / mustn’t / can’t work in the evenings and at weekends.

He 18 doesn’t have to / mustn’t / must drive fast because there are speed cameras everywhere in my town.

My mum’s a nurse, so she 19 has to / mustn’t / can’t wear a uniform when she’s at work. Sometimes

she starts work very early but my dad usually takes her to work in his taxi, so she 20 must / doesn’t have to /

mustn’t get the bus.​