Please read this contract and sign it.

We signed the contract.

This contract requires the signatures of both parties.

Due to the fluctuation of the tide level, the coastline is always changing.

He expressed words of condolence for his friend's death.

He went to the church to offer condolences for his friend's death.

He mourned the death of his friend and expressed deep condolences.

We signed the new contract.

My kitchen knife is very sharp.

We entered into a contract with a new business partner.