Clean water is ______ necessary than fresh air to [\people living in big cities．

       A．no more          B．not more          C．no less            D．not less

 As taxpayers, they felt that they could no longer tolerate ___ a say in the government．

       A．not to have        B．not having        C．having not      D．to have not

 I don’t smoke now, but I ______ for almost ten years．

       A．ever smoked                                    B．have ever smoked                      

       C．had ever smoked                               D．was ever smoking

 They gave a most wonderful performance , ______ people will never forget．

       A．it             B．that                   C．one                   D．what

 Many people attended the meeting, some of ______ were businessmen．

       A．them               B．that                   C．whom             D．which

 It is hard to find a job that can both bring in a lot of money and ______ one’s interests as well．

       A．fit                 B．go with        C．suit                D．match

 Don’t refer to the dictionary every time you come across a new word as sometimes its meaning may be _____ clearly in a given context．

       A．picked out          B．ruled out          C．taken out             D．brought out

 ---How long have you been friends?

     --- Well, our friendship ______ childhood．

       A．is dated from                                    B．dates back to                            

       C．starts from                                        D．dated from

 I can’t thank you ____ much because without your help I ______ have won the first prize．

       A．too; wouldn’t                                  B．very; shouldn’t                        

       C．that; might not                                 D．so; couldn’t

 There still ______ some doubt whether the government can deal with the economic crisis successfully．

       A．exist                B．existing        C．is existing   D．exists