We know that about seventy percent _____ the earth _____ covered by water.
| A．/; is | B．of; are |
| C．of; is | D．about; are |
Stop making so much _____. The children are sleeping.
A. voice B. noise C. sound
I don’t believe that this _____ boy can paint such a nice picture.
A. five years old B. five-years-old C. five-year-old
– Do you mind my closing the window?
-- _____. It’s much too noisy outside.
A. Yes, please B. Of course not C. All right
– Do you know what has happened in Japan recently?
-- The earthquake! It’s _____ one that I have ever heard of.
A. a very serious B. a more serious C. the most serious
– Can I help you, sir?
-- I’d like to have 100 _____. I want my students to draw pictures.
A. piece of paper B. pieces of paper C. pieces of papers