【成语好，才是真的好】

1.When in Rome, do as the Romans do. 入乡随俗；

2. Speak of the devil. 说曹操，曹操到；

3. Practice makes perfect.熟能生巧；

4. God is shining on you. 你好幸运啊！

5. There is no such a thing as free lunch. 天下没有免费的午餐！