Can you check these 6 paragraphs, please?

1) During my Christmas holidays I helped my mum dress the Christmas tree and wrap up the last Christmas presents.
2) I suggested her what she should give my father as a Christmas present.
3) I went shopping for clothes and I spent almost all my pocket money
4)I spent time texting my friends
(How I can express this: sending text-messages of "best wishes" to my friends??) and writing Christmas cards
5) On my last school day before my Christmas holidays I exhanged greeting with my schoolmates
6) We went on a one-week school trip in the mountains (How can I express this: we went on a skiing holiday organised by the school?). We were accompanied by our teachers.

Thanks

2. I suggested her what = I suggested to her

#4. What you have in parentheses is fine.

#5. I exhanged greeting = either a greeting or I exchanged greetings

#6. What is in parentheses is fine.

Sra

Sure, I can check these paragraphs for you. Here are the corrected versions:

1) During my Christmas holidays, I helped my mum decorate the Christmas tree and wrap up the last Christmas presents.
2) I suggested to her what she should give my father as a Christmas present.
3) I went shopping for clothes and I spent almost all of my pocket money.
4) I spent time sending text messages of "best wishes" to my friends and writing Christmas cards.
5) On the last day of school before my Christmas holidays, I exchanged greetings with my schoolmates.
6) We went on a one-week school trip in the mountains. It was a skiing holiday organized by the school, and we were accompanied by our teachers.

To express "sending text messages of 'best wishes' to my friends" in a clearer way, you can say "sending text messages with 'best wishes' to my friends."

To express "we went on a skiing holiday organized by the school," you can simply say "it was a skiing holiday organized by the school."