His grandparents live on the twelfth floor and go up and down by l________ (电梯). To my s_________( 吃惊 ), she came back on time that morning. Our teacher always e__________( 鼓励 ) us to do more reading after class. If you want to be a good runner, you must p ________(练习) running every day. “ My little dog that I bought a few months ago has died,” the boy said s________(悲伤).