Many people use "let, let's and lets" in conversation What's the difference between them?
As a rule, we don't use the passive voice with "let". "Allow" or "permit" is normally used instead: We were allowed to do whatever we wanted. We were permitted to drive the vehicle. Accordi...
Maybe the former could be read as "Please let me know: What do you think?" In that form I believe it too would be correct.
grammar - Which is correct (if any): "please let me know what do you ...