While intelligent people can often ________ the complex, a fool is more likely to complicate the simple.

 Even after I ______ to soil science, I sometimes wondered whether 1 was doing what I wanted to do.

How about the two of us ____ a walk down the garden?

Professor Lee is considering going to teach in our school, where he can get paid ________.

Mr. Brown is an experienced doctor. He is always         when faced with emergency.