If it ________ tomorrow, we will go to the zoo. A. isn’t rain B. doesn’t rain C. won’t rain
—Must we finish the project in a month?—No, you _______.
—Which is _______, the sun, the moon or the earth?—Of course the sun.
—How many students are there in your school?—_______ students, I think.
—Would you mind my smoking here?—_______ It’s not allowed here.
—_______ do you have a sports meet at your school?—Once a year.