Writing prompt: Tom and Sam

Student essay:
Sam and Tom are good friends.They have someways the same and some difference.Sam is smarter than Tom,and Sam is also taller than Tom.But Sam is not as thin as Tom,he is heavier than Tom.So Tom runs faster than Sam.Though they get up as early as each other.But Tom is not so hard-working as Sam.Tom is not as funny as Sam too. But he is friendlier than Sam.They are both popular with their classmates.

Corrected essay:
Sam and Tom are good friends. They have some ways the same and some differences. Sam is smarter than Tom, and Sam is also taller than Tom. But Sam is not as thin as Tom. He is heavier than Tom. So Tom runs faster than Sam. Though they get up as early as each other, Tom is not so hard-working as Sam. Tom is not as funny as Sam too. But he is friendlier than Sam. They are both popular with their classmates.