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Exercise 4. Read the dialogues. Use must or mustn't to respond to
the situations.
Can you stay a little longer?
I'm sorry, I
go.
I'm so tired. Let's go back home.
No, never. We
Can you smell it?
Yes, I can. There
Ouch, my back hurts!
You
give up.
be a fire somewhere near.
do more exercise.
Do you want to study in Boston?
Yes, I do. But I
improve my English first.
Why are your neighbours so angry?
We
make so much noise at night.
I want to be the best.
OK. But you
Mum, can I go out now?
Not now. You
I'm afraid it will rain.
We
cheat.
tidy your room first.
take an umbrella.
There are two yellow lines on the road.
We
stop here.