1. I have learned ES for 3 years
2. My brother hasn’t written to his pen pal for 6 months
3. According to me, Maths is not as easy as math
According to me, Maths is harder than ES
4. The Nile is the longest river in the word
5.Mary is the most intelligent people in my group
6. No one else in his class is taller than Tuan
7. Followimg your diections is difficult
8. I haven't met him for 2 months
9. I have learnt English for three years
10. The Pacific Ocean is the largest ocens in the word
11.Nam is the best student in my class
12.My house is smaller than yours
13.The black car is more expensive than the red car
14.That exercise is not as easy as this one
15.No other film is more interesting than this film