There is an art room the first floor. A. in B. at C. on——青夏教育精英家教网—

摘要： There is an art room the first floor. A. in B. at C. on

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There is an art room ___ the first floor.
A. in B. at C. on

There is an art room ___ the first floor.

A. in B. at C. on

There is an art room ___ the first floor.

A. in B. at C. on

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