试题题干
Some linguists thought that all languages （ ） and were ruled by a common grammar.
参考答案
正确答案：
试题解析
一些语言学家认为所有的语言都起源于一种语言，并受一种共同语法的支配。
Some linguists thought that all languages （ ） and were ruled by a common grammar.
一些语言学家认为所有的语言都起源于一种语言，并受一种共同语法的支配。