Hi,this is te vocabulary of the unit 3 and 4.
UNIT 4
Busy-Keep ocuppied.
Earn-Obtain money of work
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Save-Keep money to spend it after.
Pleased-Be happy and satisfied.
UNIT 3
Skin-The tin layer of tissue forming the natural outher covering of the body of a person or an animal.
Eco-friendly-Not harmful for the environtment.
Global warming-A increase of the temperature of our planet.
Greenhouse gas-A gas to contribute with the greenhouse effects.