1 Choose the correct options. 1 'Is it a formal meeting?'
'No, you must /don't need to/ can wear a tie.'
2 'Can I smoke in here?'
I'm afraid you can't. You need to/ needn't/ mustn't
smoke anywhere inside this building.'
3 'Mr Long, I'd like to take the day off tomorrow.'
'Sorry, I'm afraid you don't need to / must/ can't.
We're too busy in the office tomorrow.'
4 I have a meeting with my boss today. I needn't/
need to / don't need to get to work on time,
Otherwise, I'll lose my job.
5 Sarah can't come with us because she needn't/
has to / can prepare a presentation for her boss.

plz replay ​