问题
选择题
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
答案：B
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。
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