Although interior design has existed since the beginning of architecture, its development into a specialized field is really quite recent. Interior designers have become important partly because of the many functions that might be (61) in a single large building.
The importance of interior design becomes (62) when we realize how much time we (63) surrounded by four walls. Whenever we need to be indoors, we want our surroundings to be (64) attractive and comfortable as possible. We also expect (65) place to be appropriate to its use. You would be (66) if the inside of your bedroom were suddenly changed to look (67) the inside of a restaurant. And you wouldn’t feel (68) in a business office that has the appearance of a school.
It soon becomes clear that the interior designer’s most important (69) is the function of the particular (70) . For example, a theater with poor sight lines, poor sound-shaping qualities, and (71) few entries and exits will not work for (72) purpose, no matter how beautifully it might be (73) . Nevertheless, it is not easy to make suitable (74) for different kinds of space, lighting and decoration of everything from ceiling to floor. (75) addition, the designer must usually select furniture or design built-in furniture according to the functions that need to be served.

A．correct

B．proper

C．right

D．suitable