It is global warming, not other things, ______ the extreme weather.

The doctors has_________ a new idea on thetreatment, which is well thought of by his companions.

________ confidence in yourself is thebiggest barrier _______ greater progress in your work.

Are there ___________ students in yourschool — Yes, _____________ the studentsis about 2000.

The work is not very profitable(盈利的) _______ cash(现金), but I am getting valuable experience from it