He was crazy ______ his study when he was young, which contributes ______ his success in later life.
People hope to become more _____ in predicting earthquakes.
We had a really bad time about six months ago but now things are _____.
— What's the matter with you, Lucy? — After the long walk, my legs _____ and I couldn't go any farther.
The task _____ more difficult than we expect.
_____ his happy look, he must have passed the driving test.