Which of the following sentences is grammatically correct and appropriate for describing a daily routine?
A) He usually goes to school at 8 o'clock.
B) He go usually to school at 8 o'clock.
C) He is usually going to school at 8 o'clock.
D) He goes usually to school at 8 o'clock.
E) He went usually to school at 8 o'clock.
