Which one is correct?

1.a]Everyday Mr. Ram takes his son to school.
b]Everyday Mr. Ram sends his son to school.

2.a] They were picnicking beside the beach.
b] They were picnicking on the beach.

3.a] He is the best father one can ever ask for.
b] He is the best father one can ever ask for in this world.

4.a] Somaraj is poor at English.
b] Somaraj is poor in English.

5.a] Chepul likes yellow colour shirt.
b] Chepul likes yellow shirt.

You can mail me the answers to me.