一、根据首字母或汉语提示完成下列句中所缺的单词。
1. Mr. Ma lives in the countryside. He grow many kinds of vegetables in the ______ (庭院).
2. My sister is listening to music in her ______ (卧室).
3. David is drawing a picture on the wall with a piece of ______ (彩色粉笔).
4. Could you please help me ______ (数数) the number of the books?
