The furniture in the living room are new.

The furnitures in the living room are new.

She printed five document for the meeting.

She printed five documents for the meeting.

She printed a five documents for the meeting.

Extensive research was done before launching the product.

Extensive researches were done before launching the product.

Extensive researches was done before launching the product.

They signed two contract with new clients.

They signed two contracts with new clients.

They signed two contractes with new clients.

He submitted several proposal to the board.

He submitted several proposalses to the board.

He submitted several proposals to the board.

The manager reviewed the financial report.

The manager reviewed the financial reports.

Choose the correct sentence: