My father went to the post office to pick up the letter.A. in public B. in for C. in perso

问题补充：

My father went to the post office to pick up the letter.

A. in public

B. in for

C. in person

D. in trouble

答案：

A. in public

B. in for

(答案→)C. in person

D. in trouble

解析：考查短语辨析。A“公开地”；B“从事”；C“亲自”；D“有麻烦”。句意“我爸爸亲自去邮局取信。”故选C。