1 Antibiotics ARE PRESCRIBED by doctors to fight disease for many years.
2 What would our lives be like if X-ray machines WERE NOT INVENTED?
3 Scientists believe that a vaccine to prevent malaria WILL BE DEVELOPED soon.
4 In the past, many patients WERE INFECTED each year in dirty hospitals.
5 Natural plant remedies for illnesses ARE DISCOVERED all the time.
6 Anaesthetics WERE NOT USED in operations until the 19th century.
