Mr Li began to teach in this school, _______, some time later, she became popular with the teachers and students for her excellent teaching levels. A. where B. when C. that D. which
答案:A. 解析: 本题是由where引导的非限制性定语从句, 先行词为表地点的school, where在从句中作状语, 因句中有时间状语some time later, 可排除when。