Vivien worked very hard at all her lessons. __________, she became the top student in her class.
I’m not sure about the meaning of the word. You’d better look it up in a ____ .
Trees ____ fight air pollution.They are natural air conditioners.
____ it snowed heavily yesterday, nobody in our class missed the lesson.
Tomorrow there’s a programmed about our school on TV,then it ____ by millions of people.
My brother is two meters in height.It’s very difficult to find clothes big enough ____ him.