This book is said _____ in the fourteenth century.
  A) many times
  B) to have been written
  C) when it was written
  D) by being written

  Mother made a cake yesterday. Passive form: _____
   A) A cake made by mother yesterday.
   B) A cake is made by mother yesterday.
   C) A cake was made by mother yesterday.

  Intolerance between ethnic groups _____ on lack of information.
  A) usually based
  B) which has been based
  C) which is usually based
  D) is usually based

  The new hospital _____ in the coming year.
   A) will build
   B) will be built
   C) would be built

  He _____ yesterday.
   A) had his hair cut
   B) had his hair to be cut
   C) had hair to be cut

  Passive form of 'This coat doesn't fit me.'
   A) I am not fitted by this coat.
   B) I do not fit this coat.
   C) This coat is not fitted by me.
   D) None of these

  The tree _____ by the man.
   A) cut down
   B) has cut down
   C) was cut down

  I don't know Michael. / Michael _____ to me.
   A) is not known
   B) has not been known
   C) was not known

  It has been predicted that within the next 50 years, scientists _____
  a drug to prolong life up to 150 years or more.
  A) are producing
  B) to be produced
  C) will be produced
  D) will have produced

  It _____ that the Government would do something to relieve the
  situation.
  A) is assumed
  B) assumed
  C) was assuming
  D) was assumed