Viết lại câu với nghĩa không đổi: He began to use a computer when he was 19. Did Dad start to work when I was born?

Bài tập viết lại câu với nghĩa không đổi
1. He began to use a computer when he was 19.
-> He has...............................................................
2. Did Dad start to work when I was born?
-> Has ...............................................................
3. She last come back to her home village in 2005.
-> She hasn't ...............................................................
4. After she had planned everything clearly, we started our work.
-> By the time ...............................................................
5. People don't care much about the environment so they keep making it worse.
-> If people...............................................................