21.   Beta-lactams are the most widely used antibiotics, both in outpatient clinics and in hospitals, Naimi said.

22.   Adriamycin, also called doxorubicin, is the most widely used chemotherapy drug for fighting metastatic breast cancer, or cancer that has spread beyond the breast.

23.   After a year of operating the vehicles, most of which used natural gas, the council approved the expansion of the program.

24.   All of the schools reported they were using standardized tests to assess achievement and most were also using other measures such as oral presentations by students.

25.   But Hern, who wrote the most widely used textbook on abortion, supports many malpractice claims.

26.   But most of them used much stronger language.

27.   But most of them use the water for industrial or irrigation purposes, and not human consumption.

28.   But that is so low-tech, and besides, most of us use two or three or more applications but only one keyboard.

29.   Ceramic tile and cement are the most commonly used flooring surfaces in Venezuela.

30.   Coach Jimmy Johnson gave the players the day off Tuesday, and most of them used it to prepare their homes for the storm.