You _____ read a book in the sun—it'll do harm to your eyes．
| A．couldn't | B．wouldn't | C．needn't | D．mustn't |
Little Jerry was interested in stories about undersea exploration, so he gave all his pocket money to his brother ________ the novel based on such a story.
| A．in favor of | B．in exchange for | C．in need of | D．in place of |
Even if she brushed the old pot __________, she could not make it completely clean, which made her upset.
| A．firmly | B．steadily | C．roughly | D．thoroughly |
The number of college students who attended national examination for admissions to the civil service in 2013 reached 1,117,000, a (n) ________ of one million per year in the recent three years.
| A．average | B．number | C．amount | D．quantity |
—What are you busy with recently?
—We have been looking into how the machine breakdown __________.
| A．came out | B．came about | C．came down | D．came up |
If an artist is enthusiastic and has great courage to overcome difficulty, inspirations of his art will never __________.
| A．break out | B．work out | C．run out | D．put out |