76.State officials report that soaring rates of liability insurance have risen to force cutbacks in the operations of everything from local governments and school districts to day-care centers and recreational facilities.
(A)rates of liability insurance have risen to force
(B)rates of liability insurance are a force for
(C)rates for liability insurance are forcing
(D)rises in liability insurance rates are forcing
(E)liability insurance rates have risen to force
答案是C
怎么推断出用progessive verb rense to indicate this is an ongoing problem?
进行式标志是soaring
rates of 比率
rates for 费用
明白.谢谢了啊,清楚了!!!
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