Question

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

Answer 1

【答案】：B

本句中only后接的是after引导的条件状语从句。only提前时，主句部分倒装；结合本句的时态可知，B项正确。