She says she will come to visit our school _____ next week.
Now the air in our city is _______ than it used to be. Something must be done to stop it.
—The books are so nice, which one can I take? —Oh, you can take _______ of them. I’ll keep none.
I wanted to explain, but he didn’t give me any _______.
—Who is playing the piano in the classroom? —_______ must be Susan. She plays the piano after school every day.
The first day of school, my teacher says “I” _______ a word in English.