题目

When my kids were young we bought them two pet parrots. These beautiful, white birds would   41   all through the day, which sounded beautiful. We had a big   42   for them with toys, and a mirror, plus food and water dishes. We couldn’t let them   43   in the house because of our dogs and cats, but they didn’t seem   44   in their cage or so I thought. One day in spring when the sun was awakening the earth and the air had turned   45   , I opened the window to   46   the gentle wind in. The songs of dozens of different birds   47   the air and our two p补全本课出现的单词1. s__d 2. em__l 3. ex__ sive 4. ch__ __p