_____ writer, she is excellent, _____ teacher she is not very good.
103. The activity is called "saving the earth" which refers to more reduction of ____ caused to the world by freon (氟里昂)of refrigerators.
104. Oh, your coat is quite out of _____. You should buy a newer one.
105. I saw a beautiful golden fish in the street market ______.
106. Don’t scold him. He was just trying to do a good _____.
107. When he was very young, my chemistry teacher took _____ in reading detective stories.