----How terrible the air is!Yes,if there are ___trees, there will be ___air pollution in our city.
As we know, _____of us likes pollution.
—To make sure the food we eat every day is safe, the government is doing something useful . — ___________ A. That’s not true. B. That’s all right. C. That’s great.
—Bill, look at your bedroom, _______ —Sorry, mom. I’ll clean it right away. A. Bad luck! B. What a pity! C. What a mess!
—There are four pens on the desk. —But of them works. A. each B. none C. all
—How do you know the Maglev train? —It’s well-known. And it can reach a _______ of over 400 km per hour. A.project B. guide C. speed