1.He is such a person in vain that he often looks__________upon someone.
2.If you buy our goods,our company______________(deliver) the goods to your door.
3.It hit me__________there was no one at home.
4.One of his audience often referred__________his shortcomings in singing.
5.—So you intend______________(spend) your summer holidays abroad?
—Exactly.
6.When reading English novels,I often come__________some idiomatic expressions that I can't understand.