I’m going to be late for work. There’re ＿＿＿ buses on this route(线路).

Things made of plastic are usually _______, but they are _______ to get polluted.

－It’s too noisy here.. －Yes. Let’s go ___________.

Do you know the result of the ________ race? Yes. The winner is a boy ________ Lin Feng from Class 4.

She has _____ friends. She always plays by herself.