(a) Pasteur was a famous scientist. (Interrogative) He discovered that many diseases are caused by germs. (b) He found cures for several of them. (Negative) (c) At first, he treated only animals. (Passive) (d) He found a mad dog and injected some germs of the diseases into its blood. (Interrogative) The dog was cured. One day, a boy named Joseph was brought to Pasteur. (e) May our medical science develop more and more. (Assertive)