Each of them is dancing in the hall now.中is 为什么用is

Each of them is dancing in the hall now.中is 为什么用is Mary is dancing in the hall.改为一般疑问句 This is a hall.We practice dancing in the hall.(将两句合并成一句,句意不 ---who is singing and dancing in the gym now? Is the girl dancing now?什么意思? there is a crowd of people in the hall翻译 in front of the dining hall is the sports hall and the build Each of them are还是is clever. Look.each of them.(Have) an apple in their hands.正常应该用is hav Each of them is five dollars 请问Each of them后面问什么用 is而不是are she is eating in the d___ hall the dining hall is in front of offices.and it is ( )the gym.