Prior______at Telemachus, Daniel Fraser was Senior Electronics Technician for Valley Network Solutions.

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问题 Prior______at Telemachus, Daniel Fraser was Senior Electronics Technician for Valley Network Solutions.

选项 A、a work
B、to work
C、a worked
D、to working

答案D

解析 prior经常和to一起使用,是一个表示“在……之前,优越于……”意思的介词短语。因而可以将(A)a work和(C)aworked排除掉。prior to是一个介词短语,后面应该搭配名词或动名词使用。因此(D)toworking是正确答案。
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