<span>People
travel by train, by plane, by boat, by car, by bike and on foot.
People travel by train, plane, boat, car,
bike and on foot.
Оба приемлемы.
</span>
Вот ето страну свою вести россия или украина
He went away. Он ушел прочь.
? к подлежащемy
Who went away?
Общий
Did he go away?
Специальный
Why did he go away?
Разделительный
Не went away, didn't he?
Альтернативный
Did he go away or wait for?
Have already seen ( это законченное действие, результат)