Build on Others' Comments in Conversations Practice Test

In the conversation: Mia: “I like winter.” Leo: “My shoe is blue.” Sam: “I saw a bird.” Which comment does not connect?

Look at the conversation: Rosa: "I think the story was funny." Ken: "Why?" Rosa: "Because the cat wore a hat." Mai: "Also, like Rosa said, the cat did silly tricks." How did Mai build on Rosa?