Put the words in the correct form. No one has ever know the_______ of his death

IV. Put the words in the correct form. (10 pts)
31. No one has ever know the_______ of his death.                                           TRUE
32. The experiment was_______, so they had to do it again.                              SUCCEED 
33. There was a wave of_______ from Europe to America in the 19th century.   MIGRATE
34. Thomas Watson worked as the only_______ to Alexander G. Bell.                          ASSIST
35. The supporters of the team cheered when the referee blew the_______ whistle.    FINALLY
36. Alexander G. Bell was among the greatest_______ of all time.                               INVENT
37. What is the_______ between the Moon and the Earth?                     DISTANT 
38. I have warned him_______ time, but he won’t listen.                     COUNT
39. Alexander Bell’s invention was_______ successful.                     COMMERCE
40. This_______ gives young artists an opportunity to display their work.        EXHIBIT