The fact has worried people the number of the deaths is still increasing.
A. what
B. which
C. that
D. when
网友回答
A. what
B. which
(答案→)C. that
D. when
解析：
试题分析:考查同位语从句。由句意可知the number of the deaths is still increasing.是对fact进行的解释说明，判断为同位语从句，从句句意完整，不缺少成分，所以用that引导。句意：死亡人数仍然在增加这一事实让人们很担忧。