-- _____is that used for?---_____ the floor.
The stranger to walk into the building in the early morning was probably a salesman.
— I feel it necessary that everything by the time our manager arrives.— Yes, to make sure the conference is held on schedule.
It’s burning hot today. Shall we rest in the shade these trees?
A terrible thought Mr. Smith when he was leaving for work: what if an accident happened while his son was alone at home?
Jack was late for nearly two hours this morning but he gave such important reasons he was excused.