请根据句意从方框中选择合适的单词，并用其适当形式填空，使句子通顺。

decide     speak    live   care      seventy

 
—I will take part in a ___________competition. —Good luck.
Mr Brown has a sense of humor and always makes his class ___________.
To do or not to do , that’s a question. It’s hard for her to make a ___________.
— What made Peter unhappy?
—He was punished because he did his homework ___________.
China has done a lot of activities to celebrate the __________ anniversary(周年纪念日) of the victory of the Chinese People's War of Resistance against Japanese Aggression.