—You look so tired. What’s the matter?—I was so busy that I didn’t go to bed 12 o’clock last night.
In order ____________ for the meeting, my sister had to get up early this morning.
I think English is as _______ as math.
________ a walk is good for your health.
This tall building has _______ floors. And Tony lives on the ______ floor.
My bicycle doesn’t work. I’ll ask Uncle Wang __________.