pronoun training

Click the links and then fill in the correct pronoun. You can check your answers, too.
http://www.kico4u.de/english/uebungen/praeposition/dayprep.htm
http://www.kico4u.de/english/uebungen/5klasse/mehimher.htm
http://www.kico4u.de/english/uebungen/5klasse/waskommtrein.htm
http://www.kico4u.de/english/uebungen/pronomen/its.htm