<span>The animals agree they have enough strength to take control from Napoleon but decide they are not smart enough.
True </span>
Actually, Lisa skates better than he
Actually, <em>he </em>skates better than Lisa
Because in elliptical clauses words are purposely left out because of pattern or logic of the sentence.
(Im not 100% sure ive just started learning it but it seems logical sorry if im not helpful)
The second one. Cody and Aleena are the antecedents and <em>their</em> is the pronoun referring back to them.