读一读，选出每组中不同类的单词。
--- What’s in your pencil-case? --- A.Two rulers and a pen. B. It`s a math book. C. A bag.
How manydo you have ? A. English books B. English C. English book
There are 15 in the bag. A. pen B. a pen C. pens
I have math book , notebook and English book . A. a an a B. a a an C .an a a
Put away your books. A. Thanks. B. All right. C. Sorry.
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