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

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