Circle the word of which the underlined sound is pronounced differently from the others.

It was the first time Jim went to HCM city with his parents. When the plane landed at Tan San Nhat airport, the day was fine. There was s bright sun, and the sky was cloudless and blue. It is said that HCM city is the city of sunshine. They took a taxi to the Rex Hotel, a very big hotel in the city center. After checking in, they went upstairs to their room on the fifth floor. Jim was happy to see the sight of the city. Through the window of the bedroom, he could see the beautiful picture of the city. It was marvelous to see the city sparkling in colorful light at night. Jim visited many of the places of interest such as Nha Rong Harbour, Dam Sen Park, Suoi Tien and Saigon Water Park. HCM city is famous for shopping malls. Jim bought a lot of souvenirs for his friends at Saigon Tourist Centre. The next evening, the whole family walked along the streets, then came into a well-known vegetarian restaurant to enjoy delicious food. It was really wonderful.

_____ Their room was on the sixth floor.