3.
1. You mustn't eat in the class. b. at school
2. You must put out the fires. e. in the countryside
3. You mustn't walk on the grass. d. in the park
4. You must clean your bedroom. a. at home
5. You must wear a helmet when you ride your bike. f. in the street
6. You mustn't feed the animals. c. at the zoo
4.
1. E completat.
2. Give her some...
3. I can't meet him...
4. I want to talk to them
