Had the weather been good, the children out for a walk.
A. had gone
B. could have gone
C. would go
D. went
网友回答
A. had gone
(答案→)B. could have gone
C. would go
D. went
解析：考查虚拟语气及省略。这是一个与过去事实相反的虚拟语气，结构为： if +主语+ had done, 主语+ would/could/might + have done,从句中if省略，助动词had 提前，所以此题选B。