8. They might find out the cure of cancel in near future
The cure... of cancer might be fond out in the near future.
9. He must do his homework now
→ His...homework must be done by him now
10. They should use computers at work
Computers. should be used at work.
11. People should stop all experiments on animals.
All experiments on animal should be stopped.
12. She is going to build a new house next month.
→ A... new house is going to be built by her next month