--Good morning. How much should I pay for these books ________ to Alabama? -- Hm, about ten dollars.
Apples are usually sold by ________ weight and eggs are sometimes sold by ________ dozen.
Professor Zhang gave all the textbooks to all the pupils, except ________ who had already taken them.
Although he sometimes loses his temper, his students like him ________ for it.
.________ all over the hills and around the lake are wild flowers of different kinds.
I think that this meal was well worth ________ was charged for it.