He is now studying in the USA as an __________student. (change)

6. He is now studying in the USA as an __________student. (change)
7. They have a good __________ of stamps. (collect)
8. Goods are __________ as long as they are returned in good condition. (change)
9. The party __________ twenty bottles from various parts of the house yesterday. (collect)
10. When did you start __________ antique glass? (collect)