Fail the English exam

Fail an exam (this is the answer of others on Baidu)

I looked it up in the dictionary: he failed in math, but he passed all other subjects. He failed in math, but he passed all other subjects. Pass/fail the exam. The expression of failing in the exam is incorrect, which should be /an failing in the exam, an exam failing in the exam or failing in the exam, and directly add the subject name after failing. That's all I know. I don't know if it's right. You can ask your classmates and teachers. I hope it helps you.