“how many friends ()you at school?'' my mother asks A does B do C are D are going

“how many friends ()you at school?'' my mother asks A does B do C are D are going
“how many friends ()you at school?'' my mother asks A does B do C are D are going

“how many friends ()you at school?'' my mother asks A does B do C are D are going
“how many friends ()you have at school?'' my mother asks
B do
你这道题好像少写了一个have

你没把题目写全吧，或者抄漏了，重新看下，