-- _______ is it from Beijing to New York?--More than 30,000 miles.

--______is it from here to the Capital Airport? --Nearly sixty kilometers.

It’s raining cats and dogs now. The students are running or riding home. The words “cats and dogs” means______.

—Stephen, did you visit Nanjing Confucius Temple the day before yesterday?—No, I didn’t go there as you told me. ______, I went to Jiming Temple with my parents.

-- Is air the lightest thing in the world?-- Not            . Scientists from Zhejiang University have just developed the world’s lightest material.