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It is surprising that Jack, who is only 39 years old, in the field of engineerin

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It is surprising that Jack, who is only 39 years old, in the field of engineerin

It is surprising that Jack, who is only 39 years old, _______ in the field of engineering for 20 years when he entered the company last month.

A．workedB．had workedC．has workedD．working

试题答案

B

解析

标签：oldyearsinoffield

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