________ is known to us all that the sun rises in the east.

You’ve got so ________ housework to do. Can I help you, mum?

In winter, the weather of Moscow is ______ colder than _______of Beijing.

 — Here are three books on history. Which one would you like to borrow?一______. You see, I’m interested in geography these days.

—There is still a copy of the book in the library.Will you go and borrow______?—No,I’d rather buy___in the bookstore.