Вставьте относительные местоимения (who, whom, which, that) или наречие where

1.Justin Bieber is a singer _ has sold over 140 million albums.

2. Kangaroos are animals_ live in Australia.

3. A mouse is something _ helps us use a computer.

4.Albert Einstein was a scientist to _ we should be thankful for the invention of important things.

5. Mosquitoes are insects_like to bite people. ​