class 9: questions in reported speech

https://elt.oup.com/student/solutions/int/grammar/grammar_06_022e?cc=de&selLanguage=de
https://www.ego4u.de/de/cram-up/grammar/reported-speech/exercises?05
http://www.englisch-hilfen.de/uebungen/indirekte_rede/fragen.htm
http://www.perfect-english-grammar.com/reported-speech-exercise-6.html
https://www.ego4u.com/en/cram-up/grammar/reported-speech/exercises?06
http://www.kico4u.de/english/uebungen/reportedspeech/questions2.htm
http://www.e-grammar.org/reported-speech/test2-exercise2/