整点时间表达o'clock — 英语填空题
题目
根据句子提示填空。Today Sam gets up at seven o'clock（七点）, has breakfast at eight o'clock and goes to school at nine o'clock. He has lunch at twelve o'clock. In the evening he goes to bed at nine o'clock too. Sam gets up at ___ o'clock. Sam goes to school at ___ o'clock. Sam goes to bed at ___ o'clock.