Try these exercises for the grammar and vocabulary practice on Reported Speech and Jobs:

Brg2 AIO More Practice 2

Brg2 AIO Reinforce 2

brg2-aio-more-prac-2-ak

reportedspeechworksheet

And a more complete explanation about Reported speech on these links:

http://elblogdelingles.blogspot.com/2006/09/lesson-32-reported-speech-i-estilo.html and http://elblogdelingles.blogspot.com/2007/02/lesson-33-reported-speech-ii.html

http://roble.pntic.mec.es/dgub0004/reportedspeech.html

http://www.englisch-hilfen.de/en/grammar/reported.htm

You can also watch a video with a short explanation in English: