1.insist on 堅持,一定要

Customize the product or insist on the cookie-cutter model?
按客戶的需求定做產品或者堅持些模型？

I insist on quietness in my room.
我要求在我的房間里要安靜。

2.be confident of 對…事有信心，確信…

Only thus can you be confident of yourself.
只有如此,你可以相信你自己。

My father has helped me to be confident of being myself as well.
父親也給了我以信心做我自己。

3.use to 過去常常

Below are different strategies you can use to help you deal with each of these negative emotions.
下面介紹了一些不同的方法可以用來幫助您處理每一種負面情緒。

Mining has led to water polluted by mercury which miners use to separate the metal from river sediment.
但開采者常用來從河沙中分離黃金的水銀也導致了河水的污染。

4.give back 歸還，恢復；后退

You could give back the money you owe me.
你也可以把欠我的錢還給我。

What a nice way to give back to the community and help others!
這是多么好的一種回饋社會和幫助他人的方法啊！