Liu Xiang achieved his __________ to become the first man to cover the 110-meter hurdles in less than 12.91 seconds.

We take this opportunity to express our sincere         of your timely help.

In China, the education is divided into three _______: basic education, higher education and adult education.

Such men have made______by developing oil businesses.

Come along now and sit down． Tom, can you make＿＿＿＿＿for Mary?