整点时间的表达：It's ... o'clock. — 英语填空题
题目
明明的周末时间表：7:00 起床，12:00 吃午饭，4:00 下午上画画课。请根据时间提示，用 It's ... o'clock. 补全句子：① It's ___ o'clock. It's time to get up. ② It's ___ o'clock. It's time for lunch. ③ It's ___ o'clock. It's time for the art class.