A number of books in the library ____ been stolen so that the number of them ____ smaller than before.
| A．have, is | B．has, is | C．has, are | D．have, are |
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A number of books in the library ____ been stolen so that the number of them ____ smaller than before.
| A．have, is | B．has, is | C．has, are | D．have, are |
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