1 Did travelling become a part of our life? общий вопрос
2 Why did travelling become a part of our life? специальный вопрос
3 What became a part of our life? вопрос к подлежащему
4 Did travelling or jogging become a part of our life? альтернативный вопрос
5 Travelling became a part of our life, didn't it? разделительный вопрос