—What’s wrong with my computer, Jack?—Let me have a check. OK, it works now.—You mean, nothing wrong with it, ________ ?
_______the road, be careful.
_______twice, he didn't want to try again.
______a nurse, she knew how to take care of a patient.
The______ look on his face suggested that he had passed the exam.
As a boy, he was_______ hard all day long.