Передайте следующие предложения в страдательном залоге 1. Mr. Brown signed the contract. 2. He is showing his office

1. Mr. Brown signed the contract. - The contact was signed by Mr. Brown. 2. He is showing his office now. - His office is being shown by him now. 3. They will make their advertisement soon. - Their advertisement will be made by them soon. 4. We had settled the question by that time. - The question had been settled by us by that time. 5. The boss has just singed the contract. - The contract has just been signed by the boss.