The colour yellow______ the feeling of________.
—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.
The old man was _______ sad _______ say a word when he heard the bad news.