sentence making

i've rewritten the sentences given below without changing their meaning and have to start the sentences with the words given in the brackets.....
like i give u an example:
Need she send an e-mail to all applicants? (Does….)
Does she need to send an e-mail to all applicants?
=> It is not necessary for you to worry about the project. (You…)
=>It is not possible for you to talk to her as she is now in a coma.(You..)
=> Joe said, “I don’t know why he hadn’t stayed till we arrived. It is so inconsiderate of him.” (Joe said, “He could….)
=> You have to leave your mobile phone under the chair during the examination. (Your mobile phone must…)
=>If you can’t attend the conference, you should ask your assistant to take your place. (You had better….)

here i'm going to write them.....if there is any grammar mistake plz correct it........
=>You don't need to worry about the project.
=>You can't talk to her as she is now in a coma.
=>Joe said, "He could have stayed till we arrived.It is so inconsiderate of him."
=>Your mobile phone must be under the chair during the examination.
=>You had better send your assistant at your place.If you can't attend the conference.
...................that's it.............................this site is really great.....