You should keep an eye him for I have lost faith him.A. in; onB. on; inC. at; atD. for;

问题补充：

You should keep an eye him, for I have lost faith him.

A. in; on

B. on; in

C. at; at

D. for; for

答案：

A. in; on

(答案→)B. on; in

C. at; at

D. for; for

解析：考查短语：keep an eye on 注意，关注，lose faith in 对什么失去信心，句意：你应该关注他，因为我对他失去了信心。所以选B。