give up
Examples(例文)This idiom has many meanings, but the most common one is that you have decided to stop trying to do something (example #1).
It is also used when we don't know the answer to something (example #2).
Example 1:
I tried five time to fix my friend's computer, but I couldn't. I finally gave up and took it to a repair shop.
Example 2:
Teacher: Atsushi, what is the capital of Paraguay?Atsushi: Is it Quito?
Teacher: No, that's the capital of Ecuador.
Atsushi: Is it Lima?
Teacher: No, that's the capital of Peru.
Atsushi: I give up. What is it?
Teacher: I don't know--that's why I asked you.
Exercises (練習)