1/ "i'll come and help you on Saturday," joana told me _=> joana told  me she would come and helped me on Saturday__________________________________________

2/ "when will you come back home?" my mom asked me __=> my mom asked me when I would come back home__________________________________________

3/ " do you need any help on this assignment?" the teacher asked me ___=> _the teacher asked me if I needed any help on that assignment_____________________________________________________

4/ "my friend got engaged to a German last month," Danny told Ann __

=> Danny told Ann his friend got engaged to a German the previous month____________________________________________________________________