Beijing is ____ largest city in China.
  A. the second           B. a second           C. second                    D. the two

 Have you ever been to that ______ book- store?
  A.a second – hand        B.two – hand        C.the second – hand D.second – hand

 I suppose you’ll have to do it a ______ time.
  A. three            B. the third           C. third               D. three

 Are there seats for us ____?
  A. the third           B. three   C. third              D. the three

 My grandpa is studying Japanese, though he is ______.
  A.in his eighty         B.over eighty        C.more than eighties        D.in eighties

 A new ____ building will be completed soon.
  A.twenty – storey’s         B.twenty – storeys’  C.twenty – stories  D.twenty – storeyed

 There were seven ______ Negroes working on the farm.
  A.hundreds        B.hundred of         C.hundreds of       D.hundred

 Several ______ ago, our country was covered by thick forestes.
  A.million of year       B.million year      C.millions years     D.millions of years

 About eleven percent of the population in the United States _____ black.
  A. is             B. are                   C. were                  D. will be

 Three – fourths of the surface of the earth ______ sea.
  A. is      B. are        C.were       D. has been