中国It’s going to be hard, but hard does not mean impossible.

两只罗The river flows into the ocean after a long journey.​大熊丁和We sing patriotic songs during the national holiday celebration.​

猫丁A baby babbles cute sounds before learning to speak.​今日He drives across the country to visit all the national parks.​起程She paints murals on the walls of public buildings.​

赴俄The snowstorm causes schools and businesses to close for the day.​中国You study physics to understand how the universe works.​

两只罗They travel by airplane to attend an international conference.​

大熊丁和I listen to the radio while driving to work each day.​猫丁In the midst of winter, I found there was, within me, an invincible summer.

今日It’s going to be hard, but hard does not mean impossible.起程Don't wait. The time will never be just right.

赴俄The key to success is to focus on goals, not obstacles.中国You don’t have to be great to start, but you have to start to be great.

(责任编辑：郑博夫)