It has been accepted that all the students ____ put on masks before going to school in case they are infected with flu virus.
Although they plant trees in this area every year, the tops of hills are still ______.
People have heard _______ the President has said; they are waiting to see _______ he will do.
—How do you like the food in this restaurant? —Oh, _______. We couldn’t have found a worse place.
—Do you know ______ English for “帅哥”? —I’m afraid I don’t. I’m not interested in _______ English language.
Farmers stored up a great _____ of wheat and a _____ of beans this year.