In 1951, a TV repair manual salesman sold more manuals by NOT telling about the money people could save using the manual. What happened? A professor transformed his boring class to a class so intere sting that students protested when he left without completing the lecture because the time was up.
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Ravi KanthCan you please explain why the comma is inappropriate?The subordinate clause that follows 'interesting' is part of the fixed comparative structure 'so + adj + that'.