问题
选择题
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
答案：B
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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