Agreements and contracts

Complete the text using word combinations of agreements and contracts.
1. Buyer and seller enter into a legally contract once an offer has been accepted.
2. DAF is bidding for a contract to supply trucks to the British army.
3. If two people have agreed on something and signed a sheet of paper, is that a contract?
4. Peters claimed that Schaffer was only an employee in his company, But Schaffer asserted that an unwritten, contract made them partners.
5. She had an contract due to expire later in the year and wanted to take time off work to have children.