How long have you ________ in the army?
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.
—Would you like to go to the dinner party on Saturday? —Thank you. I'd love to,________I'll be out of town at the weekend.
—Haven't you realized the use________the used paper? —Yes, already.