All of the flowers now raised here have developed from those _______ in the forest.
45. The teacher gave the books to all the students except _______who had already taken them.
46 Our manager allowed _______to take a holiday next week.
47. Although he 's wealthy,he spends_____________ on clothes.
48. They were all tired, but _____ of them would stop to take a rest.
49. I don’t know whether small oranges are sweeter than big ______.