Drop litter in the bin. Must or Musn´t
Must
Is he acting?
Yes, he is.
Shout in class. Must or Musn´t
Musn´t
Be late. Must or musnt.
Musn´t
What is she doing?
She´s growing vegetables
What is he doing?
He´s cooking
Does this person work in a hospital?
Yes, he does
Are they dancing?
Yes, they are
Does she work in a restaurant?
No, she doesn´t.
Is he singing?
no, he isn´t
Is this person a chef?
No, he is a mechanic.