—What do you think of the environment here?—Wonderful!________of the land________covered with trees and grass.
They often help kids ________ dancing.
–please don’t forget _______ the window when you leave. --OK.
–Will you get there by ______ train. --No, I will take ______ taxi.
Don’t _______ too much TV. It’s bad for your eyes.
I don’t have much time _______ breakfast.