It was only when I read this story for a second time to appreciate its beauty.
A. that did I begin
B. had I begun
C. then I began
D. that I began
网友回答
A. that did I begin
B. had I begun
C. then I began
(答案→)D. that I began
解析：考查强调句：强调句的结构是“It is/was+强调部分+that+其余部分…”，这句话强调的是only when I read this story for a second time，句意：只有当我再一次读这个故事我才开始欣赏它的美。选D。