how many countryies are there in the un

how many countryies are there in the un in,how,the,flag,many,there,UN,are,急 how many country are there in the UN?哪里错了? How many [ ] are there in the hospital? How many countries are there in the How many letters are there in the worid?There are( ). ----how many staff are there in the office? ----there are___ how many flavours are there in the square? how many triangles are there in the shape below? how many boys are there in the picture? How many states are there in the United States ? How many continents are there in the world?翻译