—The museum isn’t far from here．Why not go there by ________？—OK．And it’s good for our health．
—The little dog saved his owner in the fire. —Oh, ____________it was!
—What a beautiful city Quzhou is!—Yes. Quzhou ________ a lot in the last few years.
The USA is a big country _______at any time.
—The Hang-chang high-speed railway（高铁） ____ in 2015.—Really? That’s news to me.
—May I smoke here，please?—I am afraid you ．This is a non-smoking area．
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