Exercise

Fill in the missing preposition. Fill in "_" if no preposition is needed.
  1. She is  her brother. Very unreliable!
  2. Do you work  Saturdays?
  3. They go there  every Wednesday.
  4. He'll be back  a moment.
  5. He opened the door  a special key.
  6. We went to bed  midnight.
  7. The bank is  fire!
  8. I met him  1986.
  9. I found the letter  chance.
  10. What are you going to do  Christmas?