—Must I take the medicine every day?—No, you _______.
The music sounds ______.
We ______ speaking English at the English corner to improve our spoken English.
—What are we going to do after school?—What about ______ basketball?
You can improve your English ______ practicing more.
—There was thick haze(雾霾)in our city this spring. What do you think of it?—I think ______ cars we drive, ______ pollution our city will have.