Passengers are ______to look out of the window when the train is moving.
She was so ________ in her job that she didn't hear anybody knocking at the door.
I must apologise ________ you so late.
Whoever ________ a crime can never escape from being punished.
His remarks ________ me in my opinion that he was a very considerate boy.
John received an invitation to dinner, and with his work ________,he gladly accepted it.