No matter how much time you spend planning a trip, things still _____ go wrong and air travel is no exception—from weather delays to lost luggage.

When he realized the audience’s attention was beginning to ___, he raised his voice. 

The professor was ________ to give us a lecture this afternoon, but it has been cancelled because of the delayed flight.

---It is not a secret that CEOs of major companies earn a large amount each year.--- I agree. ____ the hard economic times, it seems that their salaries have remained the same.

 It is universally believed that a student with an extremely ________ mind usually gets high scores in the exams, especially in the physics exam.