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Phong nha cave is a world heritage site .The full name of that cave is Phong nha ke bang belong to Ke bang mountains in Quang Binh Phong Nha-Ke Bang area is noted for its cave and grotto systems as it is composed of 300 caves and grottos, of which only 20 have been surveyed by Vietnamese and British scientists; 17 of these are in located in the Phong Nha area and three in the Ke Bang area. Phong Nha holds several world cave records, as it has the longest underground river, as well as the largest caverns and passageways. The park derives it name from Phong Nha cave, the most beautiful of all, containing many fascinating rock formations, and Ke Bang forest. The plateau on which the park is situated is probably one of the finest and most distinctive examples of a complex karst landform in Southeast Asia. This national park was listed in UNESCO’s World Heritage Sites in 2003 for its geographical values as defined in its
Nowadays, students are too familiar with a laptop, an essential facility in education. Both teachers and students use it for finding information, doing and checking assignments, and doing the presentation. But can you imagine 20 years ago, a laptop is just a fantasy dream with the young? They never thought that their assignments could be done without writing and if there was something that they didn't understand, they had to find it in books but with limited sources. I feel thankful for being lucky enough to be born in modern life.
7. These paintings are good enough to enter for the competition
8. My grandad's eyes are good enough to read the small print without glasses
9. My uncle's eyesight is not good enough to join the army
10. The candlelight isn't bright enough for us to read with
11. We are not old enough to vote in the coming election
12. The water here isn't safe enough for us to drink
13. My brother isn't tall enough to reach the top shelf
14. The pills aren't small enough for the boys to swallow
15. The weather isn't warm enough for us to go swimming
16. That book isn't cheap enough for me to buy
17. That suitcase isn't light enough for Ann to carry
7 These paintings are good enough to enter the competition
8 My grandad's eyes are good enough for him to read the small print without glasses
9 My uncle's eyesight is not goot enough for him to join the army
10 The candlelight is not clear enough for us to read with
11 We are not old enough to vote in the coming election
12 The water here is not safe enough for us to drink
13 My brother isn't tall enough to reach the top shelf
14 The pills are not small enough for the boys to swallow
15 The weather is not warm enough for us to go swimming
16 That book is not cheap enough for me to buy
17 That suitcase is not light enough for Ann to carry