Arnold Schwarzenegger grew up in Austria. His father was a policeman and his mother a housewife. Home didn't have a flush toilet or refrigerator until Arnie was 14. He arrived in the U. S. a penniless 21-year-old. His wife, Maria Shiver, is an anchor woman on U. S. TV news and niece of assassinated President John F. Kennedy. Andy Warhol and Grace Jones were among the 500 guests at their wedding. Others invited who were unable to attend included the Pope and the Reagans. His hobbies include reading, collecting art and attending classical music festivals.

1、in Austria 和 in the U.S. 都是地名，前面的冠词如何使用？

2、Home 前为什么不加the？

3、refigerator前为什么不加a？

4、niece前为什么不加the？

谢谢！