1————.the website of www.google.com, and you will learn a lot about Obama’s first official visit to China.
       A.Searching                                           B.To search                                           
       C.Having searched                                D.Search
2.—I’ve lost the game again.
       —______! It’s not that bad!
       A.Cheer up            B.I’m sorry            C.It doesn’t matter D.Oh, my goodness
3.—Mary,new copies of Harry Potter are on sale now.
—Great! Let’s go and buy______this afternoon.
       A.it                     B.that                  C.any                    D.one