______ is known to all, China will be an ______ and powerful country in 20 or 30 years’ time.

A. That; advancing             B. This; advanced        C. As; advanced          D. It; advanced

She is my best teacher ______ help I have made great progress．

        A．with whom         B．whose          C．which            D．with whose

― My cat’s really fat.

― You ________ have given her so much food.

A. wouldn’t                       B. couldn’t                 C. shouldn’t                D. mustn’t

I was about to leave the office ______ the telephone rang. So I stopped ______ it.

A. when; to answer      B. when; to reply     

C. while; answering      D. as; replying

--- Have you moved into the new house?

--- Not yet, the rooms _____.

   A. are being painted                                          B. are painting          

  C. are painted                                                   D. are being painting

 I found _______impossible for______ to work out the maths problem.

    A. if, he     B. that, he      C. that, him        D. it, him

Cleaning women in big cities usually get ______ by the hour．

      A．pay            B．paid            C．paying          D．to pay

The artist made up his mind to devote all he could ______ his English before going abroad．

      A．improve        B．to improve        C．to improving      D．improving

Measures must be ______ to keep the factories _____ going on polluting the rivers．

      A．taken; from   B．taken; 不填         C．done; from   D．done; 不填

Judging from _______ number of seats, ______ number of people were present at the meeting．

      A．a; the        B．the; a              C．a; a                 D．the; the