题目内容：
用方框中所给的词补全下面的小短文。
There are four __33__ in a year. Spring is the first season. In China, springtime begins around March. It is still a __34__cold, but it gets warmer and warmer, and the days get longer and longer. What is spring __35__? Spring is the green season. The trees have new green leaves. There are a lot of flowers on __36__ trees, pear trees and peach trees. Some animals wake up from their long sleep. __37__ sing to welcome spring. What do people do in spring?__38__are busy. They farm the land. People go on outings. Children fly kites. Everyone __39__spring
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