there are 和are there有什么区别.how many colours there are in a ra

there are 和are there有什么区别.how many colours there are in a ra how many colours are there in a rainbow= how many colours are there in the rainbow? How many colours are there in the text?What colours are they can you tell me how many colours [there are] in a rainbow 为什 How many seasons are there in a how many are there How many pupils are there in Class One?There are ----How many workers are there in your factory?----There are How many letters are there in the worid?There are( ). 1/为什么是Do you know how many colours there are in the rainbow? A:How many () are there B :There are cats