This is ______ key, and that is ________ orange. A. a; a B. a; an C. an; an
We were very to hear the news .
You had better _____ talk in class without permission.
—I am going to Sanya for my holiday tomorrow. —_____________.
The film Ju Qi Shou Lai is very funny. It often makes people _______.
The Yellow River is the second _________ river in our country.