Put the 10 sentences below, which all contain a modal verb phrase, in the right groups according to their functions
I must pay my income tax soon.
Could I make a quick telephone call to you?
I could speak Korean fluently when I was twelve years old.
She must have had a late night. (She looks so tired!)
You can leave the Zoom room now.
You should turn on the video at the start of a Zoom lesson.
It can't have been Rob - He's not even in Hong Kong.
Even native speakers can make mistakes.
He can run 100 metres in less than 10 seconds.
Campbell must just win the championship
Possibility
Deduction
Ability
Permisssion
Obligation

Rewrite the announcement to show the correct use of the modal verb phrase.