The folks were delighted at the message of their relatives that mine explosion.
A. survived
B. to survive
C. were surviving
D. surviving
网友回答
A. survived
B. to survive
C. were surviving
(答案→)D. surviving
解析：考查分词作定语。relatives 与survive为主谓关系所以用现在分词作定语。句意为“人们高兴于亲戚幸存于矿难的消息”选D