Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

You may choose one from the five World Heritage Sites in Viet Nam ____ in this leaflet to visit on your next field trip.

In addition to exploring the caves and grottos, and seeing its flora and fauna, visitors can also enjoy mountain climbing.

Tourists can do and see a lot in Ha Long Bay at a reasonable price.

The most magnificent feature of Taj Mahal ____ is the central dome.

My Son Sanctuary is a large complex of religious relics comprising more than 70 architectural works such as towers, temples, and tombs.

The major stone sections of the Citadel of the Ho Dynasty remain intact thanks to the unique construction techniques.

They can enjoy the -comfort and elegance of five-star hotels and luxury cruise ships.

____ with an average of 320 days of sunshine a year, the coastline offers the perfect holiday destination for anyone ____ to switch off and unwind.