将下列句子改为简单句：
问题描述：
将下列句子改为简单句：
What happens to people who live near noisy machines or use them over a period of time?
答
What happens to people living near noisy machines or using them over a period of time?将定语从句 who live near noisy machines or use them over a period of time,含并列谓语live near noisy machines or us...