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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

 

【答案】

B

【解析】考查倒裝句。Only的倒裝有兩個條件:only放在句首,且強調狀語時,后面使用部分倒裝。本題兩個條件都符合。句意:只有在他們討論這個問題幾個小時以后他們才得出結論。

 

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