单项选择题

To dry the wet pages, Richardson ______.

A．leaves them in the sun
B．places them on a sheet of glass
C．puts them between sheets of dry paper
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单项选择题
Richardson mends old books ______.
A．in a hospital
B．in a library
C．at home
单项选择题
To save old books, Richardson first ______.
A．places the wet pages on a sheet of glass
B．washes the pages
C．mends the cover
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