—Look!He’s running so fast!—Hard to _______ his legs were once broken.
There is a big dog_______to a fence outside the house.
Tell Mary that there's someone_______for her at the door.
Anything worth ______ is worthy of ______.
---Will the Smiths go abroad this summer? ---No, they finally decided _______.
The patient was warned _______oily food after the operation.