only after they had discussed the matter for several hours _

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
请求翻译并详细解析

wswzan 1年前已收到2个回答举报

czbdpc 幼苗

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only after they had discussed the matter for several hours _b.did they reach____ a decision.
他们在这个问题上讨论了几个小时才下了决定.
以　only 开始的句子,谓语要用倒装.所以只能选B或D,因为是had discussed 过去式,所以选B

1年前

逆向的风123 幼苗

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