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
B. in the form of
C. in need of
D. in the direction of
解析：考查介词短语。此处意思是“以问题方式向对方提出请求显得更有礼貌”。in the form of 符合句意。in search of“寻找”，in need of“需要”，in the direction of“朝……方向”。