She _____ understand English, _____ she can't speak it.
  A) could / and
  B) can / and
  C) can / but
  D) can't / but

  I_____ like to listen to guitar music.
  A) will
  B) can
  C) would
  D) could

  They _____ their baby Lily, but they aren't sure yet.
  A) will call
  B) are calling
  C) call
  D) might call

  You _____ have worried because the test wasn't difficult, was it?
  A) could
  B) needn't
  C) must
  D) wouldn't

  Now that I've bought a car, I _____ take the bus to work.
  A) needn't
  B) must
  C) mustn't
  D) hadn't

  _____ he leave yesterday?
   A) Did
   B) Was
   C) Had

  We _____ write an essay on the book after we'd read it.
  A) had to
  B) have to
  C) will have to
  D) must

  _____ he know how to cook well?
   A) Has
   B) Does
   C) Is

  "_____ you in England in 1999?"
  "Yes, I _____ ."
  A) Could / could
  B) Are / am
  C) Were / was
  D) Was / were

  A: How on earth did the thief get in?
  B: He _____ a window.
  A) is able to break
  B) might have been broken
  C) could have broken
  D) had to break