1.When he came home ______ (to read) an interesting story about the animals. 2.Kate entered the classroom when John _____(to stand) at the blakboard. 3.When his mother returned home he______already (to do) his home exercises. 4.Asel liked to listen to pop-music when she______(to be) younger. *жақша ішіндегі сөздерді өзгертіп сызықшаның орынына қою керек*