3 What do these signs mean? Fill in can,
must, or mustn't to form sentences.
DO NOT
ENTER
1 You.
enter this building.
2 You ...
wear a seat belt.
©
4 You
3 You ..
buy medicine here.
park here.
Points:​

1. You mustn’t enter this building.
2. You must wear a seat belt.
3. You can buy medicine here
4. You mustn’t park here