1-to go to the beach when you lived in Nha Trang
2-Mr and Mrs Smith are travelling to Ha Noi by plane now
3-My father usually drives to work
4-This part of the city didn't use to have traffic jams
5-I used to go on foot to school when I was young
6-How far is it from Ha Noi city to Vinh
7-I used to walk to school when I was a student