He passed the exam because I encouraged him _____ hard.
   A) to studying
   B) studying
   C) study
   D) to study

  _____ the wallet, _____ the head.
  A) Fatter, emptier
  B) The fatter, the emptier
  C) The fattest, the emptiest
  D) It's the fattest, it's the emptiest

  Living together has saved both boys a lot of money. _____ , Matt has always liked
  having a roommate.
  A) Besides
  B) However
  C) Since
  D) On the contrary

  The doctors tried to save his life, _____ it was too late.
   A) although b. because
   C) while
   D) unless

  The word "panorama", which names a type of painting _____ in 1787, comes from two Creek words.
   A) invented
   B) was invented
   C) had invented
   D) that invented

  The street was _____ crowded that cars were unable to pass easily.
  A) very
  B) enough
  C) so
  D) too

  The experiment _____ at the University of Tehran was successful.
  A) conducted
  B) conducting
  C) which conducted
  D) to conduct

  The little boy was _____ tired that he fell asleep during the lesson.
  A) so
  B) too
  C) very
  D)such

  You'd better not_____ warm clothes in summer.
  A) to wear
  B) wear
  C) wearing
  D) worn

  A: Did your friend, Hamed, decide to get a job?
  B: He _____ to get a job; I'm not sure.
  A) might have decided
  B) must have decided
  C) should have decided
  D) could have decided