单选题 The tree, the branches ______ are almost bare, is a very old one.
A. whose B. in which C. of which D. which

【正确答案】 C

【答案解析】[解析] 定语从句题。分析句子结构可知，逗号之后应为关系代词which引导的一个非限制性定语从句，指代前面的先行词the tree。branch(树枝)和tree(树)之间为所属关系，所以此处应用介词of，the branches of which=the branches of the tree，故本题选C。