Rosberg remained _________(领先) for the rest of the race, not allowing Hamilton a chance to overtake him.
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That athlete was really ________(聚精会神) and he broke the world record.
I couldn't go any faster, even though the car behind was __________(赶上、追近) us.
I always have ____________ (忐忑不安) when I need to make a presentation in front of my classmates.
Creativity is ________(必要的) the success and fulfillment of young people, to the vitality of our communities and to the long-term health of the economy.