Recently I my first horse ride in Lijiang Yunnan Province I paid a visit to many local

问题补充：

Recently, I my first horse ride in Lijiang, Yunnan Province I paid a visit to many local attractions

A. have had ; before

B. had ;when

C. had had; in which

D. was having; which

答案：

A. have had ; before

(答案→)B. had ;when

C. had had; in which

D. was having; which

解析：考查时态。句意：当我到当地的旅游景点参观的时候，我第一次骑了马。when当…时，我第一次骑马是在我参观旅游景点的时候，这是一个过去的时间，前面使用过去时。故B正确。