Fill in the gaps with the most appropriate modal verbs. 1) I ask you a question ?
2) You remember to turn off the lights when you go to bed.
3) When I was a child I ___ understand adults, now that I’m an adult I understand children.

1) Can, 2) ought to, 3) must, can
1) May, 2) should, 3) couldn't, can't
1) Might, 2) have to, 3) can't, can