单项选择题
Everyone（）around quietly to avoid waking the baby.
A.cracked B.crashed C.crawled D.crept
单项选择题 They claimed that（）1,000 factories closed down during the economic crisis.
单项选择题 Two men were（）a large log over the rough ground with the help of a rope.
单项选择题 They（）the flood after a heroic fight lasting five days and four nights.
