My new novel has disappeared.Who _______ have taken it?
If we applied the special method to the Internet __________ people benefit a lot in daily life, it would be better.
Without proper lessons, you would __________ a lot of bad habits when playing the piano.
President Bush said if terrorists __________ the United States, war would be what they got.
Since the general retired from the army, he __________ himself in writing his memories.
—Yao Ming and Yi Jianlian have finished their season in NBA this year.—Yes, they __________ better but for the injuries.