China is ___ the east of Asia while Japan is ___ the east of China.
By the time he was twelve, Edison _______ to make a living by himself.
The two sportsmen congratulated each other _______ winning the match by shaking hands.
Information has been put forward _______ more middle school graduates will be admitted into universities.
She stepped on my foot _______, not _______, which made me angry.
He had to _______ paying the bills because of a lack of money.