用括号里提示翻译句子

1.Persistence is the most important thing if you want to learn a foreign language well by yourlfe.
2.The fog didn't drop away until 11 o'clock,which delay dozens of flights.
3.You looked after my child when i wasn't at home.I'm grateful to you.
4.Every driver must keep in mind that being clearless at any time may cause accidents,even death.
5.How to make good use of the sun is one of the ways to save energy.
6.As a nurse,she thinks it is the smile on patients' face that does good to her hard work.