I guess that that quote said by Marmee means that Meg should develop skills and qualities which are praiseworthy, such as being hardworking, honest, and generally good, which people deem to be the qualities that a decent human being should have. She also mentions that even though she may be pretty, Meg shouldn't be vain about it, and should strive to have good inner qualities besides those outward ones.
I believe the final four are correct hope it helps :)
"Are you sure you left it on the table?" asked Roberto. is the only correctly punctuated sentence here.
the first sentence requires a COMMA inside the quotations, rather than a period. "Judy said" is attached to the quote, because the quote is judy's words. you keep them together, rather than making them two separate sentences.
the third sentence is missing a comma as well. "oh no," sarah said... is the correct way to write it, with a comma after "no."
the fourth sentence is wrong for several reasons. your end punctuation goes inside your parentheses, and this sentence put the exclamation point after. "She laughed" additionally requires a period to end the sentence, stating that she laughed, then offering her dialogue. alternatively, you could place a comma after "laughed" and accept that for the verb leading into the quote.
