根据汉语提示填空。
1. Smoking is bad for our health. I must ask my father to ______   ______(放弃) smoking.
2. He is going to Shanghai ___________   _________ (而不是) Beijing.
3. They are __________   _________ (谈论) the coming school sports meet.
4. The boy was ill and his parents _________ ________ (担心) him yesterday.
5. When you have a headache, you ‘d better ________ ________ (躺下) and have a good rest.