Please check these!

[Anonymous]

Hi,
Please check these sentences and correct them.
1. Peter promised to lend me [some cds of his, some of his cds].
2. They've mad lots of mistakes up to now. [Some mistakes of theirs, Some of theirs mistakes] were unavoidable/inevitable.
3. A burglar broke into our house and stole [some jewels of my mother's, some of my mother's jewels].
4. Jessica hates it when someone use [her stuff, any stuff of hers, any of her stuff].
5-1. The child is crying because he lost [his toy, a toy of his].
5-2. The child is crying about losing [his toy, a toy of his].
5-3. The child is crying about having lost [his toy, a toy of his].
Thanks in advance.

[Rusty]

Please check these sentences and correct them.
1. Peter promised to lend me [some cds of his, some of his cds]. (OK).
2. They've made lots of mistakes up to now. [Some mistakes of theirs, Some of their <strike>s</strike> mistakes] were unavoidable/inevitable.
3. A burglar broke into our house and stole [some jewels of my mother's, some of my mother's jewels]. (OK).
4. Jessica hates it when someone uses [her stuff, any stuff of hers, any of her stuff]. (OK).
5-1. The child is crying because he lost [his toy, a toy of his]. (OK).
5-2. The child is crying about losing [his toy, a toy of his]. (OK).
5-3. The child is crying about having lost [his toy, a toy of his]. (OK).