This week of the course was written by Tita Beaven.
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Figure 1: courtesy © Malachy Ray Rempen 2017 http://www.itchyfeetcomic.com/.
Figure 2: © Aysezquicmeli/Shutterstock.
Figure 3: courtesy: © Tita Beaven https://language-exchange-basics.teachable.com/.
Figure 4: all Creative Commons Zero https://creativecommons.org/ publicdomain/ zero/ 1.0/ top, left to right: Startup Stock Photos, Caio https://www.pexels.com; Startup Stock Photos. Second left to right: Pixabay; rawpixel.com; Marc Mueller; rawpixel.com. Third left to right: iPrice Group; Pixabay; Pixabay; Tirachard Kumtanom. Bottom left to right: Pixabay; https://www.pexels.com; rawpixel; Kaboompics/Karolina.
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