针对老龄化加速的社会现状,我国即将全面实施“一方是独生子女的夫妇可生育两个孩子”的政策。实施这一政策的总依据是
Mother always complains that children ______ their shoes very quickly. (2013 .江西)
Before you pay a visit to a place of interest, look in your local library ______ a book about it. (2013安徽)
Traditionally, college students hold a graduation ceremony to encourage themselves before they ______ on their life journey.(2013 .安徽)
Walking alone in the dark, the boy whistled to ______ his courage.(2012 .湖北)
--- OK, I've had enough of it. I give up. --- You can't ______ your responsibilities. (2012 .江苏)