根据句意及汉语提示完成句子。(5分)
Mrs.Lee                    (对……严格要求)us. She often makes us do lots of homework.
You’d better not tell Tim now. Let’s___________ ___________ ___________ ___________ . (给他一个惊喜)
After he ___________ ___________ ___________, we began to carry it out.(作决定)
I am always ready to help my classmates when they are ___________ ___________.(处于困境)
These exciting songs can___________ ___________ ___________. (让我们振作起来)