There are two long rivers in Viet Nam. The Red river is 1.200 kilometers (19) _____. It starts in China and flows into the Gulf of Tonkin. The MeKong river is longer than the Red river. It starts in Tibet and flows into Bien Dong. The Nile river is the (20) _____ river in the world. It is 6.437 kilometers long. It begins (21) _____ North Africa and flows into the Mediterranean Sea. Mount Phanxipang is the highest mountain in Viet Nam. It is 3.143 meters high. It belongs to Hoang Lien Son (22) _____ range.

Question 19. A. long B. tall C. high D. far

Question 20. A. longer B. more long C. longest D. long

Question 21. A. at B. in C. by D. on

Question 22. A. lake B. river C. mountain D. beach