Phrasal Verb: Give in

Meaning: Stop doing something because it's too hard or requires too much energy

Example: I couldn't finish the crossword puzzle and had to GIVE IN and look at the answers.

Meaning: Submit homework, etc.

Example: The projects have to be GIVEN IN three weeks before we break up for the end of term.

Meaning: Surrender, accept defeat

Example: They GAVE IN when the police surrounded the building.

Meaning: Offer or submit for judgement, approval

Example: They GAVE IN their complaint to the court.