Those were the graduate assistants ______ to do the research work in the lab.A、t

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问题 Those were the graduate assistants ______ to do the research work in the lab.

选项 A、to whom it was their responsibility
B、whose responsibility there was
C、whose responsibility was
D、of whom with the responsibility

答案 C

解析语法结构题。此题考查属格关系代词引导的定语从句，A 、D 项应先排除；B 项从句的谓语为there be结构，讲不通；因此只有C 项为正确答案。

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Thosewerethegraduateassistants______todotheresearchworkinthelab.A、t