时间表达法（整点与半点） — 英语填空题

根据时间提示补全句子（每空一词，共四空）。Lily's day: She gets up at 6:30 (六点半) and goes to school at 7:00 (七点整). 完成句子：Lily gets up at half ___ six. She goes to school at seven ___. So she gets up ___ an hour ___ she goes to school. 注意：第二空填整点表达中的核心词。