I am familiar with this subject.

Briefly, to address this, our research program is focused around three meta themes, or questions.

Our topic of the week is _____.

His trouble was chiefly mental.

The interviewer introduces the topic of the interview.

I would change depending on the places I would go the title of the exhibition.

It's not a suitable topic for discussion.

Traffic is a major urban problem.

Any problem that can be resolved with money isn't a problem, but the problem is that I'm poor.

Problems that can be solved with money are not real problems.

I chose this topic because I think it is interesting.

The same old problem.

Good question!

A good question.

Answer the question.

There are no problems.

Where is the problem?

What is the problem?

The problem's been solved.

The problem is Tom.

So I have no responsibility to anyone but myself and the subjects.

Good question!

Please feel free to ask me questions.

Something is wrong with the brakes.

This question counts for 50 points.

No, no, that's okay.

He solved the difficult problem.

I have a question.

Answer my questions.

That's my problem.

She asked him questions.

The problem isn't Tom.

I still have a question.

Then there is a problem...

That is a matter of degrees.

What an easy problem it is!

Please think about the problem.

There is something wrong with my car.

I am thinking about that matter.

I tried to change the subject.

What he said was beside the point.

I have another question.

Are there problems at home?

Nine o'clock should be O.K.

There is clearly a problem.