Commas - Practice Passage 2 Correction


Pixar films (no comma) are computer animated. The art and science of computer animation are constantly changing. Every time a new film is made, (introductory phrase) the digital bag of tricks has a new tool in it. Docter says that making the balloons look believable was the biggest, challenge.
"We had to figure out what would happen as the balloons bumped into each other," (use to set of a quotation) Docter says. "We had a computer program to make those movements happen," so that each one didn't have to be drawn individually.

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