Make sure that both doors are closed when you go out
We must learn English every day.
learn to do sth. I am going to learn to play ( play) the piano.
discuss v. 讨论;商量 名词是 discussion discuss with sb. 与某人讨论 :
Discuss this question with your partner.
Let’s discuss this problem. 让我们讨论一下这个问题。
All we need now is action, not discussion. 我们现在需要的是行动,不是讨论。