Student or Learner
Hi, thank you for reading my question.
I want to ask that is it correct to say-
I didn't contact you because of the exam I have been struggling with?
or ...because of the exam that I have been struggling with?
Thank you for teaching .
Either is acceptable in conversational Br English.
In formal Br English, you will meet some people who do not like ending sentences with a preposition, so you would be better rephrasing it to avoid that in written work.
Perhaps "I didn't contact you because I have been struggling with an exam." would convey the sense you mean? "I didn't contact you because of the exam with which I have been struggling." would be grammatically correct but sounds very stilted to a native ear.