He once worked out a plan for the project; most people didn’t agree to it.A. thenB. inst

问题补充：

He once worked out a plan for the project; , most people didn’t agree to it.

A. then

B. instead

C. however

D. but

答案：

A. then

B. instead

(答案→)C. however

D. but

解析：根据前后语义可以判断此题应该填表示转折的连词，instead表示“相反；反而”，故不合题意，只能选however。