Why did you get up so early ___ this morning.
In which picture can we see the students of the poor village reading books donated by us?
—Mum, 1 am hungry. May 1 have some______?—Of course. But don't eat too much.
—Look! A book is on the floor. Whose is it?—It ______be Rick's. It has his name on it.
—______ hard Tony is working!—Yes. We should learn from him.
It's 9:30 pm, children! ______ is time to go to bed.