What does "let me on it" mean here? Isn't another verb needed after "me" like "let me do it"? Isn't "on" a preposition here? Do you use this kind of expression in general?
"Let me on it" is being used here in the same way as "let me try". She's asking Miranda to let her see if she can solve the problem with the water cooler. This is not a common phrase and most people would probably just say "let me try" or "let me help".
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