Below are my answers:
1. John's sister told him that she had sold all his toys.
2. Miko was excited when she initially thought there was no school, but then she felt a little bit angry when she found out it was just a joke.
3. Eduardo's cousin told him that he had made a cake for him, but when Eduardo took a bite, it turned out to be a pile of salt.
4. Emily was upset when her brother told her he had broken her favorite game, but she felt happy when he showed her that he had actually fixed it.
5. My favorite joke is Eduardo's cousin telling him he made a cake. It's amusing because Eduardo was excited to try it, but it turned out to be a pile of salt, which is unexpected and humorous.