we have been students ,since we were playing改为一般疑问句

we were students three years ago?(改为一般疑问句） ___ ___studentee We have a computer.改为一般疑问句 we have some rice 改为一般疑问句 We have different collection改为一般疑问句 We have two computers.改为一般疑问句 We have some fruit改为一般疑问句 we are playing football on the playground.(改为一般疑问句) We have been learning English since we were 10years old 对划线部 They have been living in the city since they were born.(改为一般 We have been waiting since 8.00(改为否定句） she has been reading 2.We have been friends since ______. We have some great special.改为一般疑问句