Is that tense correct? "Yesterday hardly had I touched the pillow when I dropped off to sleep" - is this sentence right or I should use past simple tense?

About your specific way in studying foreign language. Sometimes there’s a moment when studying foreign language becomes a little boring and to continue you need different ways in it. Please tell me about your specific way in studying foreign language, what inspires you to learn it?

to make an offer, a proposal, a proposition, a suggestion - what's the difference? to make an offer, a proposal, a proposition, a suggestion - what's the difference?

persist in... insist on... tell me where do I should use "persist in..." and where do I use "insist on..."?

What's the difference of? what's the difference of "to abuse, to scold, to use bad language and to call names"?

Can you tell me what's the different? Can you tell me what's the different between "to be good at smth.", "to have an eye for smth." and "to know a thing or two of smth."?