11.   In the City Council, he frequently challenges City Hall, sometimes using theatrics to make his point.

12.   On a related topic, other readers have asked if using two firewalls makes sense.

13.   Some treatments, such as insulin, are already made by using genetic information.

14.   Students who have tried the CDs say that using them will make it easier to juggle several textbooks at a time.

15.   The green crowd prefers using tires to make garden hoses.

16.   The men also had their pates photographed in an attempt to measure the actual visual improvement made by using the drug.

17.   The treatment is made by using antibody genes from humans and mice.

18.   Using such equipment makes it possible to determine exactly what is causing the problem and where the problem is located.

19.   Using your hands makes you smart.

20.   The decision was made by using two balls in a velvet bag and the Germans kept their usual colours after a number one ball was drawn out for them.