Trusty Cable Inc., which is a cable TV company______the tri-county area, recently announced an expansion plan.

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问题 Trusty Cable Inc., which is a cable TV company______the tri-county area, recently announced an expansion plan.

选项 A、served
B、serving
C、is served
D、is serving

答案B

解析 which引导的是非限制性定语从句，主系表结构完整，所以空格中应该填表示“为某个地方提供服务”的动名词，作伴随状语。serving是动名词，所以正确答案是(B)。

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