Attention to all students on Grade 1 of senior high school(Other Grades is welcomed)

We have Dr.Smith who is paying a visit to Yang River recently deliver a speech to us on the afternoon of June 6th at the conference room of the main teaching building,it start at 2:30 and end in 4:30.(2)Several reguests are listed here to let you behave yourselves,first and foremost ,do come at time ,for it is a common politeness to others.(3)Additionally,it is a better choice for you to take a pen and a notebook with you.(4)Last , you'd better prepare some questions in advance for communication,considering that there is a interaction during the speech.(5)

仅做参考，不知道合不合要求，因为英语的句子比较长，所以你可以在一个句子里面多添加一些定语，状语，不定式，来合并简单句，这样就可以