A

ghi nhầm

a

b thì phải

1. My brother is a good football player.

2. My father is a careful car driver.

3. My mother is quick typists.

4. My sister is a beautiful dancer.

5. My brother is a fast swims.

6. Badminton is Mai's favorite sport.

7. Sports and game play an important role in children's lives.

8. Children do many after-school activities when school finishes.

9. Lan can play basketball well.

10. Phong can't swim well.

1. Wasn't.

2. Weren't.

3. Left. 

4. Was.

5. Told.

6. Didn't have.

7. Didn't know.

8. Bought.

2=2 ; 4=2² ; 6=2.3 ; 5=5

BCNN(2; 4; 6; 5)=2².3.5= 4.3.5= 60

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