I stopped _____ when I was thirty.
  A) to smoke
  B) smoke
  C) smoking
  D) too smoke

   He clearly remembers _____ by the window _____ the people outside rushing to their office.
   A) having stood / watching
   B) standing / to watch
   C) to stand / having watched
   D) stand / watch
   E) to have stood / to watch

  I went to the shops _____ some shoes.
  A) buy
  B) for to buy
  C) to buy
  D) for buy

  I'd like _____ somewhere different for a change.
  A) went
  B) to go
  C) go
  D) going

  Most children can't wait _____ their presents on their birthday.
  A) opening
  B) to open
  C) open

  Robert saw the doctor _____ the patient.
  A) to examine
  B) to have examined
  C) having examined
  D) being examined

  Could you tell me where _____ off the bus?
  A) to get
  B) get
  C) getting
  D) got

  I can't forgive Tim's _____ his promise.
  A) to break
  B) breaking
  C) break
  D) broken

  He finally _____ the driving test after failing three times.
  A) succeeded in passing
  B) succeeded to pass
  C) could pass
  D) managed passing

  Why do you pretend _____ his company? I know you don't like him.
  A) enjoying
  B) to enjoy
  C) enjoy