Walking alone in the dark, the boy whistled to ______ his courage.(2012 .湖北)
——Your coffee smells great!——It’s from Mexico. Would you like ____ ?
The best job is _____which uses your skill in doing something together with your interest in the subject.
——There must be a dozen pens in this house but I can never find one when I need one.——Keep looking. ____ is sure to turn up.
Who can you turn to in time of danger, it not ____.
——Which of the two books do you want?—— I want ____. Please show me .