Was it in the science museum you visited yesterday you left your keys?
A. that; where
B. that;/
C. /; that
D. where; that
网友回答
A. that; where
B. that;/
(答案→)C. /; that
D. where; that
解析：考查复杂句：第一空不填，这是定语从句，先行词是the science museum，定语从句中缺少宾语，用that或which引导定语从句，或者省略关系代词，第二空填the，是强调句，强调的是in the science museum，句意：是在你昨天参观的科学博物馆你丢了钥匙吗？选C.