用英文說？

熱心網友

Has the contract been signed?

熱心網友

Did you have a contract with someone/something?

熱心網友

Has the contract been signed?

熱心網友

因該用HAVE YOU SIGNED THE CONTRACT？表示已完成的意思，不能用現在時來表示

熱心網友

Have you signed the contract?

熱心網友

Has the contract been signed?

熱心網友

Do you sign the contract?