Complete the missing words. A preposition is missing in sentence 3. Add it.

1. Doctors will be able to identify diseases at an early in the future using sophisticated .
2. Doctors will be able to a patient’s illness from a distance. Patients will send information to their doctor.
3. means doctors no longer need to open a patient’s body when they operate them.
4. Information on large computer will help doctors diseases and give them new to cure illnesses.