[文法]托福聖經 p.226

[sugarpie (生命總會結束 愛沒有終點)]

   10. The report on the nuclear power plant indicated that when the plant

       had gone on line________ unsafe.

       (A)and it had been

       (B)it had been

       (C)had been

       (D) that it had been


       想請問大家~

       這答案為何是B而不是A呢?

       謝謝大家。 :)

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推 snooker:when的一種句型 當...，後面會有個主要句
推 glenrice:選A就有兩個連接詞了,,when和and
推 sugarpie:T^T謝謝大家的回答~唉呀呀 我得好好加油