根据句意在空格内填入适当的词.

问题描述:

根据句意在空格内填入适当的词.
Great ____ have taken place in my hometowm in the past ten years.It's getting more and more beautiful.
根据句意及首字母提示写单词.
1.I can not a____ new car.
2.Food and water is n____ for life.

changes,
afford
necessary