The child walked quietly to the bird, into the forest when he was about to catch it.
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.