'Eres' would be the answer for both.
Answer:La bandeja de entrada.
Explanation:
Entrada is received (Inbox) and Enviada is sent. The question is asking which box has all the emails you have received.
Answer:
1. Fui a visitar a mi a abuela para que no se sienta sola
2. El revisor dijo que pagues el billete
3. Me halagó que me hayas mandado tantas flores
4. Le llamé todos los días antes que saliera
Start by saying something simple and something that you can relate to.