選C
過(guò)去完成時(shí),joined以表明是過(guò)去的了,for three years 所以要用完成時(shí)
祝你學(xué)習(xí)愉快,謝謝
He in the factory for three years before he joined the Army.
He in the factory for three years before he joined the Army.
A has worked B works C had worked Dwill work
A has worked B works C had worked Dwill work
英語(yǔ)人氣：485 ℃時(shí)間：2019-08-20 06:08:37
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