Viết lại các câu sau đây sao cho nghĩa không đổi

1. Sally was ill. She didn't go to school yesterday( Since)
................
2. The last time I saw my uncle was two talk to him(when)
- I haven't..................................................
3.Let me  reach my office and then I will talk to him( when)
-I.........................
4. Why don't we donate our old books, toys and clothes to charity?(suggests)