Helen was so careless that she made _______ mistakes in her math exam.

Steve Jobs is in a sense a hero, _______, I think, that will be remembered and honored forever.

 She asked if any of the passengers knew _____ about machines or at least how to drive a car. 

There is ______ wrong with my watch. Can you tell me the time?

When you are speaking on the phone, you must convey the impression that this is an important conversation to you, ______ you are treating with great significance.