根据汉语提示填空。 1. We should be _____ (镇静的, 沉着的) before danger. 2. The l_____ snow can make the wheat warm. 3. Dennis i _____ the warning and put his hand into the lion's cage. 4. He was caught c _____ in an exam. 5. Because he didn't finish the work on time and was fined by the company, he was very u_____ about it.