Yes for example:
Parent's
Sister's
But if you want to say it is angus's pencil you would be wrong it would be:
angus'
Buddy no one is going to read that much im just saying and if you find someone that answers the question he is on some CRACK!!! so just do it by yourself
Answer:
The answer is C.
1. Newton developed his laws of gravity
2. Einstein developed his explanation of gravity.
3. Scientists predicted black holes.
Explanation:
i just took the test and got the right answer. Hope this helps. (-: