There are_________ students in my school._________ students in my school is over 5000.

---Do you know_______ the books on the shelves?
--- Sorry, I can’t count them, because there are _______books.
A. a number of; the number of     B. a number of; a number
C. the number of; a number of

There are 　　books on the shelf. And 　　　 them is about three hundred.

—_________students took part in planting trees on March .12 this year.

— Yes. It is said that ________ the students is 300.

A．The number of ; a number of              B．A number of; the number of

C．The number of; the number of             D．A number of; a number of

________the foreign friends here is over 400. And ________them come from the USA.
A．The number of;  the number of
B. A number of ;   a number
C. The number of ; a number of
D. A number of ;   the number of