. Earthquakes _____ be dangerous, if you are in the wrong place.
The thief tried to break away from the policeman who ______ him, but failed.
The telephone _______ three times in the last hour, and each time it ________ for my father.
“Aha, you’re a chain smoker!” “Only at home. Nobody _______ that but you.”
“What’s your opinion on the matter, please?” “Oh, sorry, I _______.”
“I took part in the TOEFL. It was really hard.” “Did you ______ a lot?”