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In our school library there ____ a number of books on science and the number of them ____ growing larger and larger.

In our school library there        a number of books on science and the number of them       growing larger and larger.

.In our school library, there???? a number of books on science and the number of them ???????? growing larger and larger.??

A.is, are????? B. are , is???? C. have, is

In our school library there        a number of books on science and the number of them       growing larger and larger.

A．is , are            B．are , is            C．has , is            D．have , are

In our school library there ____ a number of books on science and the number of them ____ growing larger and larger.

A．is; are            B．are; is            C．is; is              D．are; are