2. Vocabulary: Signs and instructions.
Can you remember? Type in the missing letters to complete the words on the signs.
3. Obligation, no obligation, prohibition and permission.
The following sentences are from a list of rules for library users.
Is each sentence expressing obligation, no obligation, prohibition or permission?
4. Practice.
Obligation
You have to do it. / You need to do it. / You must do it.
No obligation
You don't have to do it. / There is no need to do it.
Prohibition
You mustn't do it. / You are not to do it.
Permission
You are allowed to do it. / You may do it. / You can do it.
Choose the correct option to complete the sentences and express the function in brackets.