正确答案
试题解析
whose作为定语从句的引导词表示“某人的”或“某物的”,这里应该是“字典的封皮是黑的”,所以应该选C。“whose+从句”或“of which+从句”或with短语代替。如:The house whose roof was damaged now has been repaired。可以改为:
The house of which roof was damaged now has been repaired
The house with damaged roof now has been repaired .