[多项选择]民事法律关系的构成要素有（　　）。
A. 主体要素
B. 法律规范要素
C. 内容要素
D. 法律事实要素
E. 客体要素

The changes in language will continue forever, but no one knows sure 1. ______
who does the changing. One possibility is that children are responsible. A
professor of linguistic at the University of Hawaii, explores this in one of his 2. ______
recent books. Sometimes around 1880, a language catastrophe occurred in 3. ______
Hawaii when thousands of emigrant workers were brought to the islands to 4. ______
work for the new sugar industry. These people speaking different languages
were unable to communicate with each other or with the native Hawaiians or
the dominant English-speaking owners of the plantations. So they first spoke
in Pidgin English-- the sort of thing such mixed language populations have 5. ______
always done. A pidgin is not real]y a language at all. It is more like a set of
verbal signals used to name objects and without the grammatical rules needed
for express