Only after they had discussed the matter for several hours a decision.　　A they reached B d

发布时间：2020-08-16 17:54:58

Only after they had discussed the matter for several hours     a decision.
　　A they reached        B did they reach     C they reach     D do they reach

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解析：本题考察only前置的倒装句。Only引导状语从句前置，主句主谓要部分倒装。又因为从前文中的had discussed判断出是过去时间，故选B；
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