1. I have to go home now.

2. I want a glass of milk.

3. He didn't eat until his parents came back.

4. We write with pens.

5. You look anxious.

6. A bad workman always blames his tools.

7. A contented mind is a perpetual feast.

8. A good beginning is half the battle.

9. Try to have a mind of your own.

10. Don't nag me!

11. Accept what was and what is, and you'll have more positive energy to pursue what will be.

12. calm down：冷静下来

13. carry on：继续

14. cast away:（1）丢掉；（2）浪费

这些句子简洁明了，适合初中生学习和使用。