Are you fond of the blues ________ important part of African-American culture?

[　　]

A. that is an

B. which are

C. that is

D. is an

What he did was ________ different from what he had promised.

[　　]

--Hello. Can I help you?

--Yes. I want to find some good music to dance

________. Do you have such a CD?

[　　]

--Have you learned all the words ________?

--No. I can't keep them all

[　　]

A. by heart; in mind

B. by your heart; in your mind

C. in heart; by mind

D. with your heart; by mind

--Are we about to have dinner?

--Yes, it ________ in the dining-room.

[　　]

A. is serving

B. is being served

C. has been serving

D. serves

The silence of the library ________ only by the sound of pages being truned over.

[　　]

In the park street,there wasn't a single person _________she could turn for help.

[　　]

A computer can not remember who _______;it simply does what________.

[　　]

The reason for all the changes being made_________ to us.

[　　]

The girl danced ________ the music of Paul Mauriat band．

[　　]