In the first box : dolphins and grey seals both sleep with half their brain so that the other half can watch for predators
second box : dolphins sleep and swim at the same time ( i think )
third box : ( im sorry but I'm not sure about this one)
i hope this helps a little :)
Do they sound right in the sentence and do they match the context
1) my mother’s name is ____ and my father’s name is ______.
2) there is a cat that roams the streets at night.
3) i had the best idea last night.
4) i watched the stars last night with my best friend.
5) i would like to visit London, England or San Francisco, California.