The students today will be good citizens tomorrow. They will give their country back whatever it has given them.
A:
Because the students today will be good citizens tomorrow, they will give their country back whatever it has given them.
B:
The students today will be good citizens tomorrow because they will give their country back whatever it has given them.
C:
So the students today will be good citizens tomorrow, because they will give their country back whatever it has given them.
D:
Because the students today will be good citizens tomorrow, so they will give their country back whatever it has given them.