-Look! The telephone is broken. Someone damaged it ________ purpose.-That may be right. But perhaps it was broken _________ accident.
The thief had himself _____ by the police when he was trying to break into the hotel.
The reason was _____ I was busy with my work at that time.
. He misunderstood _____ I said.
. The trouble is _____ we are short of hands.
The guide showed the travelers _____ of the factory.