21.  Chores used to be a critical part of growing up.

22.  Credit cards have been a critical part of bank earnings in recent years.

23.  Devlin said a critical part of what had carried him forward were modest expectations and a desire to entertain the audience.

24.  Education is also a critical part of development work for children like Jhair Garcia Arias.

25.  During the negotiations, critical parts of the hospitals have been closed or barely operational.

26.  Estes said the most critical part of the procedure is ensuring there are no leaks at the upper part of the graft.

27.  Essentially, the start is the most critical part of a luge race, which is often decided by thousandths of a second.

28.  Even being a few minutes off can cause you to miss a critical part of a favorite program.

29.  Genetically engineered seeds are a critical part of business strategy for the handful of companies that dominate the American crop-seed industry.

30.  He agrees with Fox and Bush that the migrant workers are a critical part of the American economic engine, particularly in service and agricultural industries.