Các chất bị nhiệt phân hủy là : 

\(Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O\)

\(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)

1 the forest

2 behind some trees

3 afraid

4 didn't come

5 Ben

6 noisy and dangerous

7 best friend

8 big rocks

9 eating lots of sausages

1 international

2 interesting

3 words

4 advice

5 sharpener

1 A

2 B

1 B

2 A

1 didn't go

2 have just decided

3 came

4 has been

5 ate

6 hasn't had

7 have you known

8 drank

9 has come

10 Did she have

11 have worked

12 was

13 Has she eaten

1 read

2 is Tracy reading

3 goes

4 rains

5 aren't watching

6 wash

7 Are they going

8 hurry

9 are playing

10 are not talking

11 wears

12 Are you preparing

13 am sending

14 teaches

15 is doing

chú ý dấu nhân nha bn