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
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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。