Where did Hoan go last Sunday?

Câu hỏi :

Read the passage carefully, then answer the questions

Last Sunday, Hoan went on excursion to Oxford. He got up early and took a bus, so he arrived there on time. In the morning, he visited the National Gallery, Big Ben and the Hyde Park. In the afternoon, he bought a dictionary and a small disc with the words “Oxford University”. He met some English students in the bookshop. He was happy to practice speaking English with many foreigners. Although he felt tired, he all had a nice day.

Where did Hoan go last Sunday?