We can see __sun in the day, and we can see ___many stars at night.
--- The office isn’t _______. Will you please turn on the lights? --- Sure.
--- I like the program Man and Nature. --- But I _______Sports News.
--- Who helped you clean the classroom yesterday? --- _______. I cleaned it all by myself.
It’s very kind _______ you to take the sick boy to the hospital.
What if she _______ tomorrow?