he must be in his bedroom now（改为反义疑问句）

题目

he must be in his bedroom now（改为反义疑问句）
he said to me "Have you seen the film yet?"(改为间接引语）
it is time for class but he can't find his textbook he is really( )

答案

在这里must be 表示推测,所以反义疑问句应该是 he must be in his bedroom now ,isn'the?解释如下 My father must be in his office, isn't he?must 的反意疑问句规则较多,本句中must表示猜测“一定,肯定”,反意疑...