Language analysis course: modality 2

Matching exercise

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Why are the examples wrong?
Match the items on the right by dragging them to the items on the left
It should work now
You don't have to come if you don't want to
Could I have your name please?
You should drive more carefully
Couldn't you find it?
They might arrive late, who knows?
That can't be her mother. She's too young.
This needs to be kept dry
Will you answer the door, please?
I must go soon
obligation
permission
ability
necessity
non-obligation
willingness
speculation
advice
impossibility
likelihood