Why didn't he come to school yesterday? I want to know.(改为含有宾语从句的复合句）
I want to know why he didn't come to school yesterday.
十年以后,我们还会见面的.
We'll meet again in ten years.
二十世纪九十年代末,我们家乡发生了巨大的变化.
Great changes took place in our hometown in the late 1990s.