单项选择题
At that time, we did not fully grasp the significance of what had happened.（）
A．give B．understand C．attach D．lose
单项选择题 His shoes were shined to perfection.（）
单项选择题 Mr.Henley has accelerated his sale of shares over the past year.（）
单项选择题 Anderson left the table，remarking that he had some work to do.（）
