单选题 Although they usually did their own painting and papering, on this occasion they brought in a firm of ______ decorators.
A. inside B. inward C. interior D. internal

【正确答案】 C
【答案解析】[解析] 固定表达
“室内装修”对应的英文表达为interior decoration。本题中interior decorator指做室内装修的人或公司。