英语选择题before,after,when,since

问题描述:

英语选择题before,after,when,since
have you known each other for long?
not very,____we started to work in the ABC Motor Company.
A.before B.after C.when D.since

d
这里是完成时.not very 应该是省略了long
翻译过来用“自从”要更合适.意思是“我们从在abc摩托公司时才认识的”.