I prefer to work on -> Я считала нужным сосредоточиться на
Why "Never HAVE I'VE seen'? There is an auxiliary verb already, why do you add an extra one?
And why 'So good of a sentence'? I meant 'никогда не видел такого хорошего предложения от тебя'
Strangely is an adverb thiugh o_O The way you said shows us exactly using adjectives instead of adverbs.
Explain this moments please.