My room is a mess and mum is coming home! - You must...
tidy it
I'm hungry but I haven't got a snack. - You can...
eat my apple
I want to send an email but my computer is broken. - You can...
borrow my laptop
I'm meeting Stan at the station at 11am. - You mustn't...
be late
After dinner, you (must/mustn't) wash the dishes.
must
I have a test tomorrow, so I (can/must) study tonight.
must
We don't have any homework, so I (mustn't/can) play computer games this evening.
can
Mum doesn't know about the surprise party so you (mustn't/can) tell her!
mustn't
You (must/can) borrow my dictionary, but I want it back this evening.
can
The train is leaving in five minutes so we (must/mustn't) hurry!
must
Tennis players ... play for more than two hours. Please take breaks.
mustn't
Swimmers ... wear swimming caps on their heads.
must
You ... run on the stairs. Please walk.
mustn't
