Sentence examples similar to a problematic question to answer from inspiring English sources

"It's a tough question to answer".

"That seems a tough question to answer.

This is a tough question to answer.

That's a tough question to answer.

"That's a simple question to answer.

That is a difficult question to answer.

That's a hard question to answer.

This appears to be a difficult question to answer.

That's a harder question to answer.

This is a hard question to answer.

It's a hard question to answer.