CO₂ không phản ứng với chất nào trong các chất sau:

A. NaOH

B. CaO

C. O₂

D. Mg

My mother is always early for work

What fresh milk!

What a delicious cake!

What an interesting movie!

biết 1 ít ak:

huynh đệ: anh em

tử thi: xác chết

21. English is an important subject for student

22. Football, this activity is very useful for children

23, Today I am listened an interesting story from him

24. This car is bettter than that car

25. Our country has got many factories