2 . The meter ________ measure ________ gas used.

A．used to, the amount of	B．is used to, an amount of
C．used to, an amount of	D．is used to, the amount of

3 . ________ homeless people has increased greatly. Therefore, ________ work needs to be done to improve the situation.

A．A number of, an amount of	B．The number of, huge amount of
C．A number of, the amount of	D．The number of, a large amount of

6 . You can look up ________ information on the Internet. It’s very convenient.

A．a number of	B．the number of
C．an amount of	D．the amount of

7 . Taking a bath uses twice more water than taking a shower. (改为同义句)
Taking a bath uses three times the _________ _________ water that taking a shower uses

9 . ________ students wanted to do the characters’ voices after the cartoon was made.

A．The amount of

B．The number of

C．A number of

D．An amount of

10 . A DVD-ROM drive can hold ________ pages of writing, pictures, videos and sounds.

A．the number of

B．an amount of

C．a large number of

D．huge amounts of