1. This building is ………………. that building.                                     (high)

2. Aunt Janet is ………………. than all women here.                            (old)

3. My bicycle is ……………….her bicycle.                                            (nice)

4. Her uncle’s house ……………..her house.                                          (expensive)

5. Mt. Denali is ……………….that mountain.                                        (high)

6. The panther is ………………. …..the giraffe.                                     (fast)

7. These bags are …………….. ……those bags.                         (heavy)

8. The Nile River is ………………. than Red River.                             (long)

9. Russia is ………………. our country.                                                  (big)

10. Ha noi is …………………….Ho Chi Minh city.                             (hot)

Tìm số nguyên n sao cho :
a ) 4n - 5 : 2n -1 
b) 2- 4n chia hết cho n-1 
c) n^2 + 3n + 1 : n + 1
D) 3 n + 5 chia hết cho n -2