根据句意及首字母（汉语）提示，补全单词。

1. People are i____new sports or games all the time.

2. If you can't stand the h____ , get out of the kitchen.

3. I would like to buy a pair of shoes with___    _（可调整的）sizes for my daughter.

4. This is a new model machine which is very easy to o         .

5. We learned in school that             （个人的）computers were invented in 1976.