Itwasasmallplacethencomparedto_______itisnow.
A
what it is 是介词 to 的宾语从句,相当于一个名词。 compared to what it is now :与它现在的样子相比。
By"languageacquisitionisprimarilytheacquistionofthegrammaticalsystemoflanguage",linguistsmeanthat______.
Ifyouarewalkingawayfromaclocktower,youwillhearthetickingoftheclockfadetoapoint________itcannotbeheard.