阅读下面短文，在空白处填入一个适当的词或填入括号中所给单词的正确形式。

    It's Sunday today. The students of Class 3 are giving their classroom a good （clean）. Let's have  look now. Miss Wang is （they） teacher. She is working with them. The （child） are very busy. Some are carrying water. Wang Hong is cleaning the windows; （other） are sweeping the floor.  Li Wei is putting up a map the wall. It is a map of China. Wu Peng is mending（修理） some broken chairs. The children are listening to the radio they are working.

    The classroom （look） nice and clean after the cleaning. The children are very happy. Listen, they are （sing） songs. It's time for lunch. They want （go） home for lunch now.