How many pens are there?, There are four pens., How many maps are there?, There is one map., How many lockers are there?, There are five lockers., How many microphones are there?, There is one microphone., How many rulers are there?, There are three rulers., How many bins are there?, There is one bin., How many teacher's desks are there?, There is one teacher's desk., How many keyboards are there?, There are two keyboards., How many mices are there?, There is one mouse., How many paintbrushes are there?, There are seven paintbrushes., How many exercise books are there?, There are three exercise books., How many bookshelves are there?, There are two bookshelves., How many dusters are there?, There is one duster.

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