问题
写作题
书面表达。
利用本单元所学的句型，谈论几种东西(如: classroom, bike, fan等)。要求：写成对话形式，不少于四句话。
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答案
One possible version:
—What's this?
— It's a classroom.
—What's this?
—It's a bike.
—Is this a hat?
—No, it isn't. It's a fan.