Walking alone in the dark, the boy whistled to ________ his courage.
John thinks it would be long ________ he is ready for his new job.
Perhaps I’m not quite fit for the job, but ________, please let me have a try.
After a long time’s hard work, he _________ Qinghua University last year.
The novel is so interesting that it is worth ________ another time.
—What do you think of the book?—________,it is one of the worst books I've ever read.