11. A laser beam can be turned into a _     _ weapon.

   A. dead       B. dying       C. deadly       D. deathly

12. I was _     _ when I learnt that your application for the post of secretary had been unsuccessful.

   A. regrettable   B. regretted   C. regretful   D. regrettably

13. Weight-lifting is an _     _ exercise.

   A. exhausting   B. exhaustive   C. exhausted   D. exhaustible

14. Tom is the most_     _  pupil in the class.

   A. industrious   B. indulgent   C. industrialist   D. industrial

15. Henry wasn't paid because he was the_     _ secretary of the association.

   A. honorable  B. honored  C. honorary  D. honoring

16. Mr. Smith complained about the_     _  air-conditioner he had bought from the company.

   A. infectious     B. deficient     C. ineffective     D. defective

17. We believe that the younger generation will prove_     _ of our trust.

   A. worth     B. worthwhile     C. worthless     D. worthy

18. The _     _ weight of the box of chocolates is more than the weight of the chocolates alone.

   A. whole       B. entire       C. total       D. gross

19. There is nothing that can control speculation,  and preserve legitimate theory from _     _  fancy, but a strict adherence to the essential principles of science.

   A. empty       B. hollow       C. idle       D. ideal

20. "Eric nearly always wins the science award."

   "That' s because his projects are_     _ ."

   A. extremely well presented     B. well presented extremely

   C. presented well extremely     D. extremely presented well