1. Today the use of credit is found convenient by most individuals. (the use of credit - подлежащее, is found convenient - сказуемое)
2. Little time has been spent by most managers on working inside the walls of their workplace. (little time; has been spent)
3. Much of your day will be spent on getting and giving information. (much of day; will be spent) 
4. A small cash (down payment) is made and a certain amount is paid by the purchaser each month. (a small cash, a certain amount; is made, is paid)
5. Foreign goods are preferred by some citizens on ground of price or quality. (foreign goods; are preferred)
6. A third-year review of one of its products is being conducted by senior manager. (a third-year review; is being conducted)
7. Our proposal will be accepted by them next week. (our proposal; will be accepted)
8. A lot of skills and knowledge are given to you by economics. (a lot of skills and knowledge; are given)