Here are the completed sentences:

1. People here **have a habit of having** breakfast **outside of** their homes.
2. The dogsled **is still used as a** means of transport **in** Alaska today.
3. Italy **is famous for its** pizza **and has many types of** cheese.
4. Alaska **is quite large, but it has** a small population **of** about 730,000.
5. If you **do not hurry, we can** have some coffee **now.**
6. So far, **climate change has had** an impact **on** our environment.