词汇运用 (共15小题；每小题1分，满分15分)
A)根据句意，用括号中所给单词的正确形式填空，每空一词。
Your idea is very       (value).  I think it’s of great help to me.
Mary is a cheerful girl and she has fewer      (worry) than her classmates.
Tom was punished by his parents because of his      (careless).
Some children in other parts of the world still live in fear of       (they) lives.
September 3rd, 2015 was a(n)       (usual) day. We held a military parade(阅兵式) to celebrate the 70th anniversary of the victory of the world anti fascist war.