Questions 1-4 refer to the following e-mail from a student to a teacher.

Mr. Griffin:

I (1)..... yesterday's class very interesting. It was nice to learn more about the animals that live at the San Diego Zoo. While I (2).... the zoo was a special place, I never (3).... how lucky we are to have such a resource in our city. Anyway, I'm writing to you because of Saturday's field trip. I can go, but I will have to bring my little brother because my parents (4).... Italy. So is that okay with you? If so, I look forward to seeing the animals!

Thank!

John Vondeling