Express the idea in the past (change the adverbials if necessary)

Express the idea in the past (change the adverbials if necessary) : 1.the students speak only english at the lesson. 2. Our lessons begin at 12 on thursday. 5.Our family gets up at 8o39;clock on sunday. 6.i ussually prepare my homework in the morning. 7. Before going to bed i can rest for half an hour and listen to the news. 8.we often have to work together. 9.we gather at the club every saturday. 10.the girl reads about 20 pages every day. 11.in the morning she takes a cold shower dries herself on the towel and cleans her teeth before she puts ob her clothes. 12.we do not understand these words. 13. the boys do morning exercises every day. 14.why do not you turn off the cassette-recorder when you leave the room?. 15.how long does it take you to get to the theatre?-it takes me half an hour to get there