Past Simple VS Past Perfect

Choose correct option.By the time I arrived, the lesson.....

Choose correct option.The bank had closed by the time I ....there.

Choose correct option. He had packed his suitcase before he... the house.

Choose correct option.Lorna looked wonderful because she...a few kilos.

Choose correct option.When I....them, the vandals had broken my window.

Choose correct option I..... when somebody knocked on the front door.

Choose correct option. After they...their picnic, they took their rubbish home with them.

Choose correct option.We..... to Austria last winter.

Choose correct option.The boys were scared because they..... on a plane before.

Choose correct option.They....the table before they...to the restaurant.