单选题 Rod Taylor ______ his career as a novelist on the internet even before he graduated from college.
【正确答案】 D
【答案解析】[解析] 语法：时态
1．选项均为动词的不同时态。
2．从句的时态是过去时(graduated)，而小说事业开始于他毕业之前，因此主句应用过去完成时。