1. You are a volunteer if you help other people willingly and without payment.

2. Homeless people are those who do not have a home and really need help.

3. She often donate money to charitable organisations.

4. The activities that individuals or organisations do to benifit a community are called community service.

5. If you are trying to make a difference, you are trying to have a good effect on a person or situation.

Tính số phân tử chứa trong không khí nếu coi không khí có là oxi và 78% là khí nito.

Đặt tính rồi tính

86271 – 43954

...

Ko có zì để ns!

a) 0-(-9) = 0+9= 9

b) (-8) - 0 = -8

c) (-7) - ( -7 ) = (-7) + 7 = 0

Ai có cùng câu trả lời thì tick mk nha!