1. Hardly had we opened the window when a bird came in.
  2. Hardly had they caught the bus when they found a seat.
  3. Hardly had she cooked a meal when they ate it all.
  4. Hardly had she made a cake when she dropped it on the floor.
  5. Hardly had Tom turned on the TV when it burst into flames.
  6. Hardly had Mary turned up on the doorstep when she fainted.

  7. Hardly had he parked the car on a yellow line when warden gave him a fine.

  8. Hardly had she finished the exam when the  alarm went off.

  9. Hardly had he walked in when everybody stood up.

  10. Hardly had he dropped his wallet on the street when beggar took off with it.