小明的学习成绩一直名列前茅,许多同学暗暗把他当成竞争对手,而他却总是热心地为同学解答难题,有人提醒他这样做会被别人超过,但他认为“帮助别人的同时也提升自己”。这表明小明( )
—Could you tell me what time the train leaves Tai he for Beijing. —I’m afraid you need to ___________ on the Internet.
—Is Mr Hu driving here? —I’m not sure. He ___________ come by train.
—Who is singing in the next room? —___________ must be Marie.
—TV says there will be a storm tomorrow. —___________, I planned to go climbing with my classmates.
Smile to the world, ___________ the world will smile back to you.