1. They have school trip and art festival this month.
A. a; a B. a; an
C. an; an D. an; a
2. —When did Neil Armstrong walk on the moon?
— July 20th, 1969.
A. In B. At C. For D. On
3. —When is your mother's birthday?
— on May 5th.
A. I'm B. She's
C. They're D. It's