look it for or look for it

look it for or look for it look for it还是look it for 为什么说 look it up 而不说look it for 为什么说look it up 却说look for it look for it 与look at it的区别.举例说明 为什么是 look for it 而不能是 look it for? can you help me look for it 为什么用for look for和look It`s hot hear.Let`s look for s______ cool. It's look for my pencil case.找错误 look,it,pleas,pencil-case,for,in,your(.)请造句 it's hot here.Let's look for s( ) cool