21.----My head hurts, I feel terrible!        

   ----_____. You’ll be all right soon.

   A. Go ahead  B. Take it easy  C .Never mind  D. Take easy

22.It is generally believed that teacher is ____it is a science.

 A. an art much as      B. much an art as 

   C. as an art much as    D. as much an art as