题目内容：

Usually we have English class in the morning.Bat now we( )why?Because our English teacher is ill

优质解答

Usually we have English class in the morning.Bat now we( don't )why?Because our English teacher is ill
这里的have是一个实意动词,所以应该用助动词do,又因为前面是表肯定的Usually we have,所以根据反义疑问句的规则后面应该用表否定的助动词don't