3,Somebody broke into our house but nothing stole.4,How many languages are speaking in Switzerland

Somebody broke into our house but nothing (was) stolen.（东西相对偷这个词,是被动关系.因而在中间加上was,并把stole改成stolen）
How many languages are spoken in Switzerland?把 speak改为被动语态,同理是类似speak english那样,语言做主语时对于speak 是被动的.