根据句意和汉语注释，写出单词的正确形式。
(1)When the doctor arrived, the victim had already stopped (呼吸).
(2)The dry weather in Southeast China has been the main (原因) of the forest fires in the area since last autumn.
(3)The students often make (相似) mistakes.
(4)In this Italian restaurant, you will have the chance to try everything (不同) from that in a Chinese one.
