—Mrs. Wang was sent to teach English in a poor mountain village last year.

—She said she would never forget some pleasant ______while working there.

A. experiments 　　　B. expressions 　　　　C. experiences 　　　 D. emotions

—Mrs. Wang was sent to teach English in a poor mountain village last year.

—She said she would never forget some pleasant      while working there.

1. A.
   experiments
2. B.
   expressions
3. C.
   experiences
4. D.
   emotions

—Mrs. Wang was sent to teach English in a poor mountain village last year.?

—She said she would never forget some pleasant      while working there.?