Itisnotdecided________theconferencewillbeheld.
C
A 什么 B 哪一个 C 什么时候 D (无词义)
______movesonascaleofthenationallanguage,dialects,andindividualwaysofcommunication.
By"languageacquisitionisprimarilytheacquistionofthegrammaticalsystemoflanguage",linguistsmeanthat______.