Which sentence does not contain any errors?
a. pour in three quarters cup of milk.
b. he has sixty-three comic books.
c. one-quarter of the game is over.
d. my older sister will be twenty one years old on sunday.

A: Pour in three-quarters cup of milk. (shouldn't be three quarters so wrong)
B: He has sixty-three comic books. (This on everything is correct)
C. One-quarter of the game is over. (This one is just incorrect)
D: My older sister will be twenty-one years old on Sunday. (Twenty one should be written as twenty-one)

-Hope I helped-