What does HiRobo look like?
1. He is long and strong.
2. His arm is long and strong.
3. He has a long and strong arm.
4. He has a long strong arm.
(Are the answers all correct? What about #3 and #4? Which one is correct? are both OK?)
All of them are correct except --
4 should have a comma to replace "and."
a long, strong arm