
http://www.xtec.es/~ogodoy/sac/rephrasing/rephrexercises.ht
http://mbonillo.xavierre.com/grammar/2bch.html
click on Rephrasing mix
http://web.educastur.princast.es/eoi/eoiovied/maribel/passive_crosswords/rewrite_passive.htm
http://www.englishexercises.org/makeagame/viewgame.asp?id=5547