Đáp án:
Giải thích các bước giải:
1.I want to visit London that is the first city in the world.
2.I have been to Paris twice when I was in France.
3.He is interested in travelling around the world.
4.My mother has never visited Sapa so she wishes to be there.
5.Hue is famous for the romantic and beautiful Perfume river.
