—So many cases about football violence recently! —Yes, it is difficult to let the football fans keep _____.
— How do you find the food here? — _______.
Elizabeth _______ a good plan of increasing sales at the meeting.
The woman ________ Mr. Brown is a professor from Beijing University.
The head teacher comes to the classroom ______ to see if the students are quiet.
I’ve been playing the piano for four hours and I am ________ it.