11.The keepers were feeding the lious.qktd
=> the lious were being fed by the keepers
12.They have taken her to the hospital. htht
=> She has been taken  to the hospital
13.They had fastened his whole body to the ground. Qkht
=> his whole body had been fastened to the ground
14.The school boys had wasted a lot of time. gkht
=> a lot of time had been wasted by the school boys