英语填介词或介词短语：It's cold( )but warm( )in Jilin in winter.

It's cold( outside)but warm( inside)in Jilin in winter.
说一句：在该处outside,inside是正确的,但它们在这里是副词,不是介词.介词后面要加名词或代词和动名词.如：
介词outside the house
副词It's cold outside.