The fact has worried many scientists _the earth is becoming warmer and warmer these years.为什么空上填what?
问题描述：
The fact has worried many scientists _the earth is becoming warmer and warmer these years.为什么空上填what?
答
我觉得应该是that吧,the fact that加句子,that引导的应该,是同位语从句.为了避免头重脚轻,所以会把that引导的从句放到后面.