1. C
2. B. 
3. D. 
4. B. 
5. D. 
6. B. 
7. D. 
8. B. 
9. A. 
10. A. play
11. B. keen
12. A. To build

1. The correct answer is C. making. The verb "making" is commonly associated with pottery.
2. The correct answer is B. plays. The verb should be in the third person singular form, which is "plays."
3. The correct answer is A. share. The verb "share" is appropriate in the context of having the same hobby.
4. The correct answer is D. helps. The singular subject "Collecting glass bottles" requires the singular verb "helps."
5. The correct answer is D. useful. The phrase should be "I find playing soccer useful" to convey the intended meaning.
6. The correct answer is B. being. The sentence should read "I love being outdoors and discovering nature."
7. The correct answer is C. to take. The phrase should be "like to take up" to express the idea of starting a hobby.
8. The correct answer is A. To build. The phrase should be "To build a dollhouse, you need to use your creativity."
9. The correct answer is D. on. The preposition "on" is used to indicate specific days.
10. The correct answer is A. play. The correct phrase is "Do you and your friends play football every day after school?"
 

1C 2B 3D 4C 5B 6A 7C 8B