【2020最新整理国开(电大)人文英语1-3896网上形考机考题库】They got there an hour __________ than the others.

【2020最新整理国开(电大)人文英语1-3896网上形考机考题库】They got there an hour __________ than the others.
选择一项：
A. early
B. much early
C. earlier