The two companies are competing each other to get into the Chinese market.A. toB. forC. i

问题补充：

The two companies are competing each other to get into the Chinese market.

A. to

B. for

C. in

D. against

答案：

A. to

B. for

C. in

(答案→)D. against

解析：考查介词：compete against与…竞争，compete还可以接for，为了…而竞争，compete in在…中竞争，句意;这两个公司彼此竞争进入中国市场。选D。