判断正(T)误(F)
I traveled America when the winter vacation was coming. ( )
One can’t see anything during a flight. ( )
To travel by train is comfortable，because passengers can walk and buy food and drinks on a train.   ( )
The writer bought a ticket one month before he started the trip. ( )
During the trip I didn’t get off the bus.  ( )
During the trip I adjusted my watch because I crossed four time zones. ( )