Because its different from the other ones and does not express it the same
Answer:
1. 先
2. 先
3. 先
4. 先
^^ I'm not enitrely sure if those are correct because the questions are asked weird.
Part 2: 我早上7点起床。我早上7点半吃早饭。我上午做作业。我上午1点吃午饭。我下午做休息。我晚上7点吃晚饭。我晚上做小吃。我晚上9点睡觉。