I'm fond of travelling by. ....... because it is .... (the fastest, or most comfortable )way.During the ..... ( flight,or trip)) we may...... (read,or sleep, talk)...... где точки всавить слова нужные из скобок,и нужно ли что всавить после by в первом предложении.

I'm fond of travelling by plane because it is the fastest way. During the flight we may read, sleep or talk.