根据句意，在答题卡标有题号的横线上，写出括号内所给单词的适当形式。
The writer’s short stories always have __________ (surprise) endings.
His grandfather’s sudden__________(dead) made his family very sad.
On her_______________(fifty) birthday, she got a nice coat from his lovely daughter.
It says that half of these accidents come from drunk drivers and many others from __________ (careful).