Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 19 to 24.

Owning a pet can be a great ___(1)___. It is a chance to love and care for a living creature. By watching and looking at its growth and behavior, you will discover that having a pet can be exciting and ___(2)___.
It is also said that owning a pet reaps benefits to your health. You will have lower blood pressure and lower cholesterol levels. Owning a pet gives you a greater sense of well-being and ___(3)___ your stress level.
Different types of pets need different kinds of care. Some pets are easy to look ___(4)___ while others are difficult. Pets are not toys and a certain amount of work is needed if you want to take care of ___(5)___ properly. You must be willing to spend a part of each day to meet your pet's needs.
___(6)___ pets, big or small, depend on their owners for food, housing and protection. Although love is very important, it alone is not enough.