Sentence examples for a really difficult course from inspiring English sources

"It was a really difficult course".

It's been a really difficult couple of months".

She told her class that she knew a man that was in the Olympics and that he skis on "those really difficult courses.

Levermann: This is a really difficult problem.

It's a really difficult dilemma.

It's a really difficult conundrum".

"It's a really difficult issue".

She had a really difficult time.

"That's a really difficult question.

"It will be a really difficult game.

But it's a really difficult process.