I_____(quick) know that I am on the wrong train填什么

I_____(quick) know that I am on the wrong train填什么 谁知道是什么歌?when you see the train i am on ,you will know that i I don't know that I am right or wrong When you miss the train i'm on,you'll know that i'm gone. If you miss the train I'm on ,you will know that I'm I_____ here an hour ago,but I am late.Ihave missed the train I am on the train改成否定句,疑问句对on the train提问 请问这里填什么?A：Please be quick!I am hurry.B:ok.All the food will I thought you _____(know) the news.That"s why I_____(not tei I said that I_____(finish)doing it already填应该填什么呢 I am sure that __you keep on practicing.缺少了什么,里面应该填什么? take the train=by train=( )the train 括号里填一个介词 in on 还是填什么