单项选择题
Be careful with those fireworks; they are（）to go off unexpectedly.
A.easy B.probable C.available D.liable
单项选择题 Most people who travel in the course of their work are given travelling（）
单项选择题 The suspect's fingerprints on the gun were the main（）against him.
单项选择题 Humidity (湿度) is so intense in some parts of the tropics that Europeans find they are unable to（）it.
