用现在完成时被动语态改写下面句子.
example:the government has decided to give everyone free computer trianing during the holidays.→it has been decided to give everyone free computer trainong during the holidays (by the government)
1.the teachers have printed the dates of each course in the newspaper .
2.the government has given more information on its webiste.
3.the government has chosen the computer science department of the university to organize the trianing course.