Use the correct form of the words in brackets

Use the correct form of the words in brackets
1.     We used to ______________ in many activities of communal center.           (participation)

2.     I can do all of these exercises ______________                                                     (easy)

3.     He was ___________ of his achievements in the field of politics.                         (pride)

4.     His _________________ of some words is not correct.                                     (pronounce)

5.     Her ________ prevented her from success.                                                         (nervous)

6.     We finished the test __________                                                                         (excellent)

7.     The teacher is pleased with the __________ in my study.                                    (improve)

8.     He is an __________ student.                                                                               (excellence)

9.     Students should only learn __________ words.                                                 (importance)

10.  __________ is necessary.                                                                                      (revise)