It was Tropical Storm Washi of Philippines on December 19 , 2011 caused the floods killed more than 684 people.
A. when ; that
B. that ; when
C. when ; when
D. that ; that
网友回答
A. when ; that
B. that ; when
C. when ; when
(答案→)D. that ; that
解析：考查强调句和定语从句。定语从句That caused the floods修饰先行词Tropical Storm。第二空that与it was构成强调句型的基本结构。