1. C

2. B

3.D

4. B

Gong culture in the Central Highlands of Viet Nam....(1)....by UNESCO as a Masterpiece of the Intangible Heritage of Humanity.
    Gong culture covers five provinces.....(2)....the Central Highlands: Kon Tum, Gia Lai, Dak Lak, Dak Nong.....(3)....Lam Dong. The masters of gong culture are the ethnic groups of Bahnar, Sedang, Mnong, Coho, Ede, Giarai... The Gong festival is held annually in the Central Highlands. In the festival, artists from these provinces give Gong.......(4)......, highlighting the gong culture of their own province
1. A. was recognized           B. is recognized          C. has been recognized         D. will be recognized
2. A.by                                   B. of                              C. with                                       D. to
3. A. but                                B. so                              C. if                                            D. and
4. A. perform                       B. performances         C. performance                       D. performing