如何申请双学位研究生:Which four letters of the alphabet would scare a burglar away？

Which four letters of the alphabet would scare a burglar away？ Which four letters of the alphabet would scare a burglar away？ The post office has thousands of letters. A thief(小偷) is afraid of four letters. What are they? The post office has thousands of letters.A thief is afraid of four letters.What are they? Comparative ratin of four brand o mil four-o'clock seed是什么意思？ which has four legs and only one foot? A thief is afraid of the four letters"OICU'.Do you know why A thief is afraid of the four letters"OICU".Do you know why? Which id the medicine for your head in the English letters?