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

What's the differents between "sit an exam" and "set an exam what's the differents between assignment and homework?Thank What's the differents between "educate" and "bring up" ... What is the differents between chinese food and japenese foo What are the differents between mammals and other animals? what's the difference between "sit" and "seat"? What is the difference between an application program and an the students ___(have) an exam the night before an exam意思 take an exam she is preparing for an exam now.对an exam提问the boy in red is what are some differents between the lives of Chinese and Br