điền từ nào cũng đc hả bn

1. The big dogs are barking at 7 am

x : 3/5 = 1/2

x         = 1/2 x 3/5

x        =      3/10

x : 5/7 = 3/8

x         = 3/8 x 5/7

x          =   15/56

x : 1/3 = 4/7

x         =  4/7 x 1/3

x         =   4/21

X x 4/3 = 8/9

X          = 8/9 : 4/3

X          =   2/3

1. B

2. B

3. B

4. B

5. B

6. B

7. B

8. B

Form the degrees of comparisons:

1. Nice  __nicer____   __the nicest___

2. short ___shorter_____    __the shortest______

3. young __younger_______   __the youngest_______

4. new __newer_______   ___the newest_______

5. old ___older_____  __the oldest_______

6. careful  ___more careful______   ___the most careful_______

7. modern ___more modern____ __the most modern________

8. popular   __more popular________   ___the most popular_______

9. dangerous  __more dangerous_______    ___the most dangerous___

10. expensive  ___more expensive________    _the most expensive__

11. little  ___less_______    ___the least________

12. bad     ____worse________   __the worst________

13. good  ____better_______    __the best________

14. much/many   __more_______   __the most_______

1. A. establish

=> established

2. B. a

=> the

già

B. humorous => humor

1. A. proofs  B. books  C. points  D. days

2. A. asks  B. breathes  C. breaths  D. hopes

3. A. sees  B. sports  C. pools  D. trains

4. A. tombs  B. lamps C. brakes D. invites

5. A. books B. floors C. combs D. drums

6. A. cats B. tapes C. rides D. cooks

7. A. walks B. begins C. helps D. cuts

8. A. shoots B. grounds C. concentrates D. forests

9. A. helps  B. laughs C. cooks  D. finds

10. A. hours B. fathers C. dreams D. thinks

11. A. beds B. doors C. plays D. students
12. A. arms B. suits C. chairs D. boards

13. C. potatoes

14. B. invents

15. D. tasks 

16. C. preserves

17. A. carriages

18.  B. mounts

19. C. accidents

20.  A. sports

okay