_________ no doubt that a green campus plays an important role in the growth of students, both physically and mentally.

I found _____ very difficult to learn maths well.

．Dad always says he prefers _______ outside the shopping centre _____ together with my mother．

Why don’t you like winter in Beijing?— Because it is winter in Guangzhou.

What are you going to do in the future? –I am dreaming of opening up my ________ company.