Complete with have to, has to, or had to.
Today, if you want to travel to a city far away, you just ? buy a plane ticket and fly there. Two hundred years ago, there were no planes. People ? take trains or use horses to go far away. Two hundred years ago, there were no planes. People ? take trains or use horses to go far away. My grandmother came to this country from Korea a long time ago. She ? take a big ship across the ocean. My mother
visit her sister in Korea next month. She is going to fly there.
