Answer
Carbon Atom shares 4 pairs of electrons with other atoms.
No, Oxygen atom and Hydrogen atom don't share the same number of pairs of electrons. Oxygen shares two and Hydrogen shares one pair of electrons.
Work Step by Step
Each line connecting two chemical symbols represents a pair of electrons being shared between two atoms.We can see that each carbon atom share 4 pairs of electrons with its neighbors. An oxygen atom share 2 pairs of electrons and a hydrogen atom only shares 1 pair of electrons with its neighbor.
The diagram is attached.