1. we will employ several workers. several workers us. a) will employ b) will be employed 2. when i arrived at the office the secretary had sent the letter. when i arrived at the office the letter a) had sent b) had been sent 3. the fashion magazine sponsored the exhibition. the exhibition the fashion magazine. a) was sponsored b) is sponsored 4. i have invested my money in real estate. my money in real estate. a) has been invested b) has invested 5. investors are putting a lot of money into china. a lot of money by investors into china. a) is put b) is being put