his idea would have （ ）.填worked 还是happened?

his idea would have （ ）.填worked 还是happened?
his idea would have （ ）.填worked 还是happened?

his idea would have （ ）.填worked 还是happened?
填worked
起作用用 work
而 happen 发生
不明白的再问哟,请及时采纳,多谢!

worked
意思是：起作用的

worked 我高三，正确性有保证哦。

worked