11.   Computer users have had to be content using a mouse for an aiming device.

12.   Despite the explosive implications of the research a number of scientists are now using mice as models for the genetic roots of human behavior.

13.   Dr. Piero Anversa of the New York Medical College in Valhalla used mice in his heart repair study.

14.   Fry had tried to build a better mousetrap by using real mice.

15.   He uses his mouse to edit them out as easily as if he were correcting a misspelled word.

16.   He probably shrank the Windows Explorer window by using the mouse to drag a side border of the window inward.

17.   He would not speculate when the research project using mice would be completed.

18.   He uses the mouse.

19.   I could navigate faster using a mouse.

20.   I controlled his legs with the keyboard, but aimed by using the mouse.