12.
1. dolphins
2. seas
3. swimmers
4. friends
5. children
13.
May I have some juice? Yes, you may, I got it for you
May you share your book? No, I may not, I need it.
May he close the window? No, you may not, It's too warm in here.
May she open the door? Yes, she may, we need some air.
May we ask something? Yes, you may, go ahead.
May they go to the blackboard? Yes, they may, it's their turn.
