Li LeiHubei. He is my good friend.
Children, will you finish _________the classroom before 5:00 p.m.?
How about the pollution in the countryside?-Luckily, it’s not as serious as _______ in the big cities.
Our Maths teacher always makes his class _____ . And we’re never tired of his class.
He likes to play ____ football, but I like to play _____ piano.