1 . ________ books in our library ________ about 20,000.

A．The number of; are

B．A number of; is

C．The number of; is

2 . The number of people invited ________ fifty, but a number of them ________ absent for different reasons.

A．was; were

B．was; was

C．were; was

D．were; were

3 . There are a number of children on the farm. They are playing games.

A．the number of

B．lots of

C．much

D．a few

5 . In this club, a number of basketball players ________ from the US. The number of them ________ 30.

A．is; are

B．are; is

C．comes; are

D．come; are

6 . —What’s the matter? Something seems to drive you mad.
—Oh, on November 11, my wife and my daughter will spend ________ money shopping in Tmall.

A．a number of

B．the number of

C．lots of

7 . This year’s Taihu Music Festival in Changzhou has attracted ________ visitors from all around the country.

A．a great deal of

B．the number of

C．a number of

D．a plenty of

8 . Now the number of Chinese people working in Africa ________ more than one million.

A．is

B．was

C．are

9 . Now __________（the/a）number of students in this school is 2, 100.

10 . A number of students in our class ________ gone to hospital because of the high fever, and the number of them ________ ten.

A．have; are

B．have; is

C．has; are

D．has; is