（）tell you what you should use in order to produce accurate utterances.

A.buildings
B.the basic framework of a country，such as schools，services，etc.
C.social demands
D.services and production

A.many women would hate to be the chairperson without considering their husband’s careers
B.many governors’wives complain they have to accept the chairperson roles
C.many women are forced to become the leaders of women’s organizations in order to protect their husband’s profession
D.many governors’wives feel it necessary to accept the roles