用方框中所给单词或词组的适当形式填空，每词限用一次。

buy       child      good   nine    stay at home

—How many _______ are there in your family?
—There are three.
Judy _______ a new shirt yesterday.
—Where do you live?
—I live in a tall building, on the ________floor.
—To stay away from A/H1N1 flu disease, how to do on weekends?
—You’d better ________.
Dick can sing English songs very ________.