Signs, Rules and Modal Verbs
must and mustn't · Reading rules · Staying safe
Read public signs and say them as sentences
Follow health advice when someone is sick at home
Use must, mustn't, can, can't, have to, don't have to
Write rules and leaflets of our own
A red circle with a line means something is forbidden
Do not feed. Keep 2 m apart. No smoking. No shouting.
Put the words back with must and mustn't
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