Are they coming by train?-they should,but they __not.they li

We should know what time they are coming?有错吗 But they are none They are -- brothers,but they look different they are twins ,but they look different They usually watch TV after supper.But this time they are li they They travelled by train 【改为否定句】 They went there by train.(对by train提问） They are green.They are brave.They are coming out of the sew They are () for the coming year They are coming for dinner next week. look,they are getting up the train.