THEY HAVEN’T ______ AN AIDS VACCINE. THEY HAVEN’T ______ AN AID...

Question

10. They haven’t ______ an AIDS vaccine.a. yet developed b. developed yetc. developed already d. already developed

Accepted Answer

I. 1. d 2. a 3. a 4. c 5. b II. 6. b 7. b 8. b 9. b 10. a 11. a 12. d 13. a 14. d 15. a 16. c 17. c 18. c 19. c 20. d 21. D (comes) 22. B (making) 23. A (stayed) 24. A (how) 25. C (fast) 26. helpful.....

THEY HAVEN’T AN AIDS VACCINE. THEY HAVEN’T AN AID...

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