–I hear your dad _____Shanghai on business. Did he fly there? –Yes, but he will be home tomorrow.
A:will go to
B:has been to
C:has gone to
有资格代表北极地区的动物是( )
历史的发展具有一定的内在联系。下列史实的搭配,不具有直接因果联系的是( )
以下是有关植物栽培的科学探究活动.请补充完整: