1. Discuss the advantages and disadvantages of making a complaint in person versus in writing. 2. You can also share your personal preference and the reasons behind it, such as immediacy, clarity, record-keeping, emotional impact, etc.

1. 讨论当面投诉和书面投诉的优缺点。 2. 您也可以分享自己的个人偏好及原因，比如即时性、清晰度、记录保留、情感影响等。