完形填空Jack worked in a shop that sold clocks. He was always telling Harry1 a new clock. But Harry, who lived next to Jack, said he 2 one.
"3 needs a clock," Jack said. "How do you know when to get up?"
"My landlord Mr Smith turns on his radio at seven o'clock and listens 4 the news," Harry said. "That's my morning call."
"OK. But how do you know when to go to work?"
"By the time I have eaten my breakfast, it's eight o clock. It's time 5 for the office. Then I walk there. When I arrive at my office, it's nine o'clock. That's 6 time I start to work." "OK. But how do you know when to go home?"
"The factory bell 7 , " Harry told him.
"But how do you know when to go to bed?"
"When the television programmes come to an end."
Now Jack was really8 . "OK." he shouted. "Now tell me what will happen9 you wake up in the middle of the night and want to know the time."
"That's easy," Harry said." I will knock heavily on10 wall. Then you will shout at me, "Why are you knocking on my wall at three o'clock in the morning?"