l know the teacher 改为否定句

l know the teacher 改为否定句 I know his teacher.(改为否定句) l know the story改为过去式否定句 I know the answer 改为否定句 It`s the teacher`s office.改为否定句 What should tell the teacher about it.改为否定句? my teacher is drawing on the blackboard改为否定句 It's the teacher's office.改为否定句 she needs to wait fou the teacher. 改为否定句 l know the student 否定句怎么变 l com play soccer in the rain改为否定句 l always watch television in the morning.(改为否定句)