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turn off to turn off turning off turning on
opened; to close open; to close open; closing opening; closing
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as,as so,as not so,as more,than
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forgot, do left, do forgot, to do left, to do
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had forgotten forget forgot will forget
need have handed in should have handed in must have handed in may have handed in
didn’t clean isn’t cleaned was cleaned wasn’t cleaned
should would should have must have
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