慣用句

This app is a quiz app for "formulas".

Would you like to try a quiz of idioms?

This app is a quiz app for "formulas" that you can do in your spare time.

Level is a problem that Japanese people want to know at least.

But you may know something you don't know. Let's challenge even during the preparation for the exam and job hunting.

There is a time limit of 30 seconds per question.

The correct answer rate is displayed for every 10 questions.