新概念英语一 97 在线等给分1课文I left a suitcase on the train to London t

新概念英语一 97 在线等给分
1课文I left a suitcase on the train to London the other day.
几天前我把一只手提箱忘在开往伦敦的火车上了.
手提箱在火车里,为什么介词要用on不用 in?
2课文 Is this case yours?
这箱子是您的吗?
我写的is it your case对吗
3课文You've given me the wrong case!
您给错了!
课文用现在完成时,为什么要用呢?我写的you gave me a wrong case.可以吗?
4there be 和 has got好像都表示有的意思,两者用法上有什么区别呢?
has got 遇上第一人称用变成have吗?
5课文There's a label on the handle with my name and address on it.
箱把上有一标签,上面写着我的姓名和住址.
可以写成 the handle has got a label （which）with my name and address on it. 吗?label后加which可以吗?