Chia từ trong ngoặc cho thích hợp

28. He finally (success) _____________ in finding a good job last week.
29. I should learn new words to (rich) _____________ my vocabulary.
30. The (produce) _____________ of this factory are of good quality.
31. Some diseases are caused by (bacterium) _____________.
32. The (develop) _____________ of transportation has made life easier.