China supplies more than 90 percent of the world’s rare earth metals, but its reserves only ________ about one-third of the world’s total.

— Which would you like, a cup of coffee or tea? — Neither, thanks. I ________ drink a glass of water.

 How ______ disasters _____ there in that area in a year ?

Mr. Bo _____ for half a month. He’ll come back in two months.

Now, young people          chat online          talk with each other face to face.