Unfortunately, ____ stone hit him on ______ head and he got injured.
The exhibition gives local artists an opportunity to________their works.
It's really very dangerous. One more step,________the baby will fall into the well.
The manager has________to improve working conditions in the company.
All the preparations for the task________, and we're ready to start.
—I'm sorry I stepped outside for a smoke. I was very tired. —There is no________for this while you are on duty.