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Oct 5, 2018 6:47 PM
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Answers · 2
There is no difference in meaning. One might add "on" for emphatic effect but the idea is already quite emphatic. "keep on" might also be used more often in negative contexts but that's just a vague impression - don't hold me to it.
October 5, 2018
FINI
Language Skills
English, French, Spanish
Learning Language
English