4. Choose the correct form of the verb.
1) You can't park
2) You shouldn't stay up
3) You can't walk on the grass
4) You mustn't be late for work
5) You can't come in
6) You mustn't put your feet on the table
5. Complete these sentences with the correct form of can, could or be able to.
1) We we're able to get the last bus
2) I could read
3) Can you repeat that ? I couldn't hear what you said
4) He could earn
5) He was able to stay awake
6) We couldn't go out
