China is the east of Asia while Japan is the east of China.A. in onB. on toC. in toD.

问题补充：

China is the east of Asia while Japan is the east of China.

A. in, on

B. on, to

C. in, to

D. to, on

答案：

A. in, on

B. on, to

(答案→)C. in, to

D. to, on

解析：中国在亚洲之内所以选用in,日本显然不在中国之内,所以选用 to