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).