Viết lại câu sao cho nghĩa không đổi

1.Mai is my best friend.(Subject focus)
..............
2.Mary sent me the ppresen by post (Adverbial focus)
...........
3.She bought him a computer at this shop (Adverbial focus)
.........
4.Goats provide milk for cheese.Goats provide wool for clothing (both....and)
........
5.The computer can gather facts.It can store them (not only....but also)
......
6.She didn't say a word and she didn't smile (neither...nor)