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thanks tdol, i find it useful. So the answer is out right?Originally Posted by tdol
It certainly is.Originally Posted by silversea
cop out (of something) (informal) to avoid or stop doing something that you should do because you are afraid, lazy, etc.: You’re not going to cop out at the last minute, are you?
How can I distinguish "keep up with" and "catch up with"? Thank you so much!