A 2. B 3. A 4. C 5. B 6. D 7. B 8. C 9.A 10. A 1 C 12.

1. - 30 BAI TRAC NGHIEM VOI KEYS FOR 9 P
30 BAI TRAC NGHIEM VOI KEYS FOR 9 P

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