the teacher had the students who did notpass the exam ______(take)the exam again.横线上应该怎么填

the teacher had the students who did notpass the exam ______(take)the exam again.横线上应该怎么填
还有,同义句转换
He cannot speak English .Neither can I
He cannot speak English .I_______ ,________.
还有，同义句
We find it not easy to laern English well.
We find ________ _________ _________ to learn English well.
PS：一条横线上只能填一个单词