1. busiest
2. crowded
3. most nature
4. better
5. beautiful
6. happy
bài 2
1.shouldnt to spend a lot of time watching TV.
2. the coldest any other place in the world.
3. we go to time square to welcome the New Year ?
4. not more convenient than a bicycle.
5. Take right at the first turning.
bài 3
1. Vietnamese pepple often clean decorate houses at Tet.
2. The air in the city is more polluted than the air in the countryside.
3. It is very interesting to take boat trip to the Perfume River.
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