I passed exam because of your help. I passed exam___ ___ ___ ___ ___(短语)

I passed exam because of your help. I passed exam___ ___ ___ ___ ___(短语)
I passed exam___ ___ ___(短语）
I couldn`t pass the exam___ ___ ___(短语）
I passed exam___ ___ ___ ___(句子）
是有四句，顶上问题还有一句。谢谢