4. Our class is going to take a picnic at the zoo on Saturday. Would you like to come?
5. I am sure you will pass your exams.
6. Daisy is very friendly on a picnic at the zoo on Saturday. Would you like to come?
7. My close friend, Mai, has a round face and black hair. She is a very good student.
8. She is leaving as a volunteer teacher in a village near Hoa Binh City.
9. My brother has short hair.
10. Next summer I am going to work as a volunteer teacher in a village near Hoa Binh City.
11. Linda has blonde hair and small eyes.
12. How tall is your sister?
13. When did you start learning how to play the guitar?
14. It's not easy to find a taxi at night in small towns.
15. We find taking a boat out this weekend interesting.
16. If it were taking a boat out this weekend interesting. (the sentence seems incomplete or has an error)