What's the differents between "sit an exam" and "set an exam" ...

shemale and female?what's the different? What's the---(different)between the two pictures? What's the ____(different)between the two days? what's the different between British English and American English what´s the different between at and in What's the different between English school and Chinese school? what's the different between moor and bog Geography What's the different between 'may well' and 'might well'? What's the different between racism and predjudice? What`s the different between A and B 还是What`s the difference between A and Does aids and hiv have the same meaning?If not what S the different between them what`s the different between the words accreditand believethanks~ 英语what's the difference/different between...该是difference还是different我怎么看两个都可以? what's mean make in china?what's the different make in china and made in china? What's the most different between Chinese and English?Just Answer in English,please. What's the different between a head of and in front of?Thanks What happens to trees in the different seasons?happen为什么加s What's the ______(different)between a hill and a pill