Mr Smith was having a meeting at that time otherwise he over to help us.A. would have com

问题补充：

Mr Smith was having a meeting at that time, otherwise he over to help us.

A. would have come

B. would come

C. had come

D. was going to come

答案：

(答案→)A. would have come

B. would come

C. had come

D. was going to come

解析：考察虚拟语气。本题是一个含蓄条件句额虚拟语气。关键词是otherwise否则，要不然；根据前半句可知是与过去事实相反，故使用情态动词+have done。结合句意可知A正确。句意：在那时史密斯先生正在开会，要不然，他本会过来帮助我们的。