Mom, Where are my keys? Do you know?— I _____ they’re in your schoolbag.

Mr. Smith has decided to his bad habit of smoking.—That’s good news. I hope he can do it.

The sweater is too small. I want a _______ one.

Excuse me. Could you wake me up when my friend _______here?—Of course. But we still don’t know when your friend ______ here.

Why is________ you are so late for the class?