—What’s in the pencil-box? —________ a pen in it.
As students, we ________ study hard to make our country more beautiful and stronger.
We will have finished ________ Unit 15 by April. We can review all the lessons.
He is ________ to make money to support his parents.
The population of China is ________ than that of any other country in the world.
The bell is ringing. Hurry up, ________ you’ll be late for class!