_______ their service, the workers of the hotel are active in learning English.
“Sorry, sorry…”, he whispered, _______ talking to himself.
Not a single word_______ when _______about his late mother.
As a result of the earthquake, two-thirds of the buildings in the area________.
He came back late, _______ which time all the guests had already left.
It was in the garden of his old house _______ he grew up that he dug up a pot of gold.