If he had more time, he _____ take piano lessons.
  A) can
  B) will
  C) would
  D) may

  If I _____ time I _____ you.
  A) have / help
  B) shall have / shall help
  C) shall have / help
  D) have / shall help
  E) has / help

  You will be called when your time _____.
   A) come
   B) comes
   C) will come

  If only I'd invested in that company, I'd _____ a millionaire by now.
   A) became
   B) have become
   C) had become
   D) would become

  I could tell you the time if I _____ a watch.
  A) had had
  B) had
  C) would have
  D) will have

  If every child _____ his teeth every day, dentists would not be very
  busy.
  A) brushes
  B) would brush
  C) brushed
  D) had brushed

  If only _____ , this wouldn't have happened.
  A) we have been careful
  B) had we been careful
  C) we were not careful
  D) we had been careful

  If Mr. White _____ mayor, he will save the city park.
  A) will become
  B) becomes
  C) is becoming
  D) became

  He will come if you _____ him.
   A) invite
   B) invited
   C) would invite

  If he _____ generous, he _____ the poor.
  A) were/would have helped
  B) is/would have helped
  C) was/would help
  D) was/will help
  E) were/would help