Freizeit - Hobbys

After German class Nora and Albert are talking about vacations.
 

Albert

What do you like to do on vacation, Nora?

Nora

I like to go windsurfing and like to swim.

Albert

Do you often go windsurfing?

Nora

Yes. Every weekend.

Albert

Great!  I don't have so much time.

Nora

Why not?
Albert I study math and also work in the library.
Nora In the summer also?
Albert Yes.  But in summer I always take a week vacation with my family.

We like to camp in Yosemite.
 

Nora Really?  I also like to hike in the mountains.