---How much does this young elephant_______?---50 kilograms ________, it eats a lot for a meal.
—______ do you spell the word “box”? —B-O-X.
There is a pen ______some pencils on the desk.
This is ________ pen. That’s ________ eraser.
The weather is _______today than yesterday.
We try our best ___ English and we practice ____ English every day.