You’d sound a lot more polite if you make a request a question．
A. in search of
B. in the form of
C. in need of
D. in the direction of
网友回答
A. in search of
(答案→)B. in the form of
C. in need of
D. in the direction of
解析：短语辨析。 A．寻找 B．以……的形式 C．需要……时 D．朝……的方向。句意：如果你以一个问题的形式请求，你会听起来更有礼貌些。故选B。