_______ you call me to say you are not coming, I’ll see you at the theatre.
My friend's car alarm ________ at midnight because it was thundering.
—Let's just play a game or something else. —Sounds good, but give me a call before you come. My mom might try to ________ something else for me to do.
The thing that ________ is not whether you fail or not, but whether you try or not.
—There is still a copy of the book in the library. Will you go and borrow ____? —No, I’d rather buy ____ in the bookstore.
We must take measures to stop various kinds of pollution ______ the environment gets worse.