.The policeman caught the thief by ________ arm.
When a fire ______ at the National Exhibition in London, at least ten priceless paintings were completely destroyed.
The sports meet, originally due to be held last Friday, was finally _______ because of the bad weather.
The store had to ________ a number of clerks because sales were down.
When he realized the police had spotted him, the man _______ the exit as quickly as possible.
Joe is not good at sports, but when it ______ mathematics, he is the best in the class.