They sealed their bargain by shaking hands [with a handshake].
Because of the contract, he is bound to deliver them.
A contract has been concluded between the two parties.
Their contract is to ran out at the end of this month.
Their contract is to run out at the end of this month.
they signed a nonaggression pact
They want to think about the contract beforehand.
The business contract ran out last month.
The business contact ran out last month.
契約したの?