6 unhealthy

7 behavior

8 southest

9 industrial 

10 belief 

bài 2

1 silent

2 holes

3 of

4 will

5 take 

6 unhealthy

7 behavior

8 southest

9 industrial 

10 belief 

bài 2

1 silent

2 holes

3 of

4 will

5 take 

17.C

18.D

19.B

20.C

21.B

1. finished
2. few
3. than
4. ?
5. for
6. was tough
7. them
8. good
9. just 
10. had
11. going
12. to
13. piece
14. would
15. any
16. what
17. make
18. and
19. you
20. much

1 left

2 few 

3 than

4 sai

5 for

6 was

7 them

8 good

9 just

10 had

11 going

12 to

12 last

14 would

15 any

16 what

17 make

18 and

19 you

20 much

Áp dụng pytago: \(BC=\sqrt{AB^2+AC^2}=10\left(cm\right)\)

Áp dụng HTL: \(AB\cdot AB=AH\cdot BC\Rightarrow AH=\dfrac{6\cdot8}{10}=4,8\left(cm\right)\)

Vì AM là trung tuyến ứng với cạnh huyền BC nên \(AM=\dfrac{1}{2}BC=5\left(cm\right)\)

Áp dụng pytago: \(HM=\sqrt{AM^2-AH^2}=1,4\left(cm\right)\)

come

learned

will go

were

had

would buy

has

will be

would prepare

won't pass

gets

would sell

won't help

doesn't practice

will phone

will give

would sail

had

won

could we meet