题目内容：

大哥哥,大姐姐们,帮个忙行吗?
we go to school by bus.
一般疑问句：
肯定回答：
否定回答：
ben and bob often have their dinner at night.
一般疑问句：
肯定回答：
否定回答：
his sister goes to school by car.
一般疑问句：
肯定回答：
否定回答