Air quality in our city is becoming worse and worse. – Yes. These days’ PM2.5 readings are frightening. We must do something to _______ air pollution.

We are afraid of the teachers______ strict with students —So am I

Oh, it ________so nice. What beautiful music it is !

With the approach of the Spring Festival, the sharply rising prices of many goods a new wave of purchase.

The great use of school education is not so much to teach you things ___ to teach you the art of learning.