The girl _____ is reading is my sister

The life-saving drug invented in 1897, which ________ aspirin, has helped increase the standard of people’s health greatly.

To keep ______, we must do more out-of-door exercises.

____________and evaluated the information, I help other scientists to predict where lava from the volcano will flow next and how fast.

下列字母的小写形式在四线三格中只占一格的是___________。