You should do more ___________ instead of sitting at the desk busy doing your _________.A. exercise; exercises B. exercises; exercise C. exercise; exercise
—Why do you like living in the countryside? —Because there’s _______ noise and _______ cars there.
—How many students are there in your school? —_______ students, I think.
—What are these? —They’re _______ and _______.
He has a ____ daughter.
There is a river ____ my house.