It was a stone tool used to make tools
Answer:
They are: listening, speaking, reading and writing. Most likely, your first few Chinese classes will focus mostly on listening and speaking, and will gradually incorporate reading and writing as you go, since these are the most difficult of the four.
You would use the word it's in place of the words "it is" because it is a contraction.
If you were to say "It is hot outside today!", you would instead say "It's hot outside today!"
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Is the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.
