Circle the most suitable modal verbs to complete the sentences.

1. He shouldn't / may not / cannot stay up late tonight if he wants to feel awake and alert tomorrow morning.

2. Nick should / can't / might be very excited if we invite him to our home.

3. Mai can / must / should be good at time management if she takes a training course at school.

4. If you want to save on your electricity bills, you must / can / might turn off all the electric equipment before going out.

5. If you help me tidy our flat this morning, you must / can / can't go out this afternoon.