1.   A cable system has two types of customers-advertisers and consumers who subscribe to a package of programming offered by the cable operator.

2.   A direct system has only one water circuit which supplies both the taps and the radiators.

3.   After years of political repression, the education system has little credibility with those it is supposed to serve.

4.   All legal systems have to deal with the situation which arises where a debtor is unable to pay his debts.

5.   Both anterior and posterior attention systems have many subcortical partners in doing their job, especially in the thalamus.

6.   Both systems have major consequences for motivation patterns.

7.   But, in his place, the school system did not have the wisdom to send in anyone more qualified.

8.   Document preparation systems have structural components such as paragraphs, and hypertext systems have additional structural components concerned with linking.

9.   Electrical systems had to be updated to install all the new equipment, which also includes a couple of freezers.