Compared with 2 million tons last year, our coal output has increased _____three times; that is to say, our coal output has increased_____8 million tonsthis year.
The writer ______ the old folk story with his own imagination and wrote a new story.
He was in great trouble, but he acted _______ nothing had happened.
I don’t think Ken did such a stupid thing, ?
_________ it with me and I’ll see what I can do.
After a heated discussion, we suggested the customer _______ the product back for repairs.