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。
Thisisanimportantproblem_______toofewsocialscientistshaveresearched.
Bloomfielddrewon______psychologywhentryingtodefinethemeaningoflinguisticforms.
Iwaswritingareportlastnight;________Iwouldnothavestayeduplate.
Lyingundertheskull,thehumanbraincontainsanaverageoftenbillionnervecellscalled______.