He bought an imitation diamond.

He forged the signature.

He won a seat in the parliament.

He sacrificed his own happiness for his family.

She mimicked the onomatopoeia of a cat.

Daedalus was a famous architect and inventor in ancient Greece.

He attended the meeting as our spokesperson.

I will act as your representative.

He solved a large number of problems.

His laughter can be expressed with the onomatopoeic word 'gyahaha'.