h of the animal world, night is the time______ for sleep—pure and simple

—What did the teacher say to you just now?—She asked me ________.[ ]

If you ______ with your classmates, you will surely get the same work done far better.

I think students should have mobile phones to call their parents.— ________. They often use them to play games instead.

Look, that’s Dwight Howard. He’s _______ NBA star.