Rewrite the headings from these job advertisements to make them parallel.

a. At the front desk, your duties are to answer the telephone, to work the computer, and assisting customers.

b. We want a candidate who has a sense of commitment, a good record in work, and who has experience in customer relations.

c. In your first training session, you will not only be taught how to work the computer, but also treating customers courteously.

d. The employee would be responsible for writing delivery orders, stocking merchandise, and sales of printers.