—You don't seem to be quite yourself today. What's wrong?—Oh, I'm suffering from a cold. Nothing serious,______
Mr. Chang is not only a teacher, ___ a writer.
In our school only teachers are allowed to use this room. And only in this room __ find some good dictionaries.
My friend, Tom, bought __ oar.
Please come here ___ four days.
“Mom, I am full.I can’t eat any ___.”