What's she up to these days/swotch careers

[Saneta]

http://www.english-test.net/toeic/listening/switching_careers.html

please explain:
1. she switched careers = she sterted careers/
2. What's she up to these days?= What does she do/see about/deal with these days?

thanks

[Beeesneees]

1. She changed career. She changed the sort of work she did.

2. What is she doing these days?
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Cheers m' dears!

[Saneta]

is it correct with 's' in: she switched careers , so it should be: she changed careers. She changed the sort of works she did.?

but if: she changed career - her career, I think it shouldn't be: she changed careers .

thanks again

[Beeesneees]

she switched careers - between two
she changed career - her career
_________________
Cheers m' dears!