Match the items on the right by dragging them to the items on the left
I canned do it yesterday
I didn't must go
Could!
It shoulds work
They are coulding swim
Did you can see it?
no third-person inflexions on modal auxiliary verbs
no meaning when standing alone
questions formed by simple inversion
no past inflexions on modal auxiliary verbs
no progressive forms for modal auxiliary verbs
negatives formed with the addition of n't or not