He was regarded as a great () to the committee.

单项选择题According to recent U. S. Statistics Yearbook, Americans spend $16 billion a year on credit cards and there are already 590 million in ().

A. preparation
B. communication
C. administration
D. circulation

单项选择题Other guests at yesterday's opening ceremony, which was broadcast () by the radio station, included the Governor and the Mayor.

A. alive
B. live
C. lively
D. living