Explain the usage of while, during, for and make up five sentences with these conjunctions

Объясните, для чего используютмя: "While", "For", "during", и напишите 5 предложений, используя эти слова (соединительные).

while - В то же время. Одновременно с чем то или кем то.

during - В течении времени. На протяжении времени.

For - Для.

1. During the 2000s

2. I stayed in London during a week.

3. You can go swimming, while I am having lunch

4. There is a letter for you.

5. It is a book for children.