Scout wants to tell everyone at school about their dad "One-Shot Finch", but Jem tells her that if Atticus wanted them to know, he would have told them himself, so she shouldn't tell her classmates. It is very mature of Jem to not want to brag.
The second and last highlighted parts
Answer:
"What (did) you (do) there? Come to me!" our teacher (shouts or shouted). We (found) a nice place for a picnic. But nobody (ate) a banana, but the gorillas (had) a nice lunch that day. It (was) a great day at the zoo, and we (had) a lot of fun.