日日人人_亚洲美女在线视频_av手机在线播放_国产大片aaa_欧美中文日韩_午夜理伦三级

35. Don’t sit _____the corner of the desk. That’s impolite for a student.

35. Don’t sit _____the corner of the desk. That’s impolite for a student.

A. on                        B. in                                C. to                                D. At

35. Don’t sit _____the corner of the desk. That’s impolite for a student.