根据句意和汉语注释，写出单词的正确形式。
(1)I'm sorry to say that those shoes in your size are not at our shop. (可以获得的)
(2)He hard after he finished the 200-metre race. （呼吸）
(3)The shirt with blood on it is one of the . (工程师)
(4)Old people can't get used to the new lifestyle . (马上)
