1.d

2.d

3.d

4.a

5.c

6.b

7.b

8.d

9.d

10.c

11.b

12.a

13.b

14.c

15.b

16.c

17.d

18.b

19.a

20.d

bai 2

1.more modern

2.boring

3.busier than

4.bigger than

5.more interesting

6.noisier than

7.the most expensive

8.cheaper

9.more comfortable

10.more beautiful

11.more intelligent

12.longer

13.lager

14.stronger

15.more difficult than

16.heavier

17.more important

18.bad than

19.better

20.the prettiest

bai3

1.longer

2.older

3.bigger

4.higher

5.more difficult

6.faster

7.colder

8.more intelligent

bai 4

1.from

2.peaceful

3.flowers

4.flowers

5.however

6.carpet

7often

8.water

9.path

10.fresh

neu sai bao minh nhe