7．It was very cold outside．There came a black car and it stopped in front of a shopping mall．A young woman was in the car．She was hungry and wanted to buy a hamburger to eat，but she didn't want to go out on such（如此） a cold morning．At that time she found a boy playing in the street． ‘Come on，boy!'she said to the boy．'Do you know how much a hamburger is in the shopping mall？' ‘Two dollars each，'the boy answered． She gave the boy four dollars and asked him to buy two hamburgers．'One is for you and the other is for me，‘she said． Some minutes（分钟）later，the boy came back．He was eating a hamburger．He gave the young woman two dollars and said，‘Sorry，there's only one hamburger left（剩下的）．'
54．The black car stopped becauseD． A．the weather was very cold． B．it was broken（坏的）． C．the woman found a boy playing in the street． D．the woman wanted to buy a hamburger 55．A hamburger in the shopping mall wasA． A．2dollars B．4dollars C．1dollar D．We don't know． 56．The young woman hadA． A．no hamburger B．one hamburger C．two hamburgers D．four hamburgers．
How can we keep （76）healthyit's important to exercise often．The Rice family try to exercise every day，Mr．Rice can't（77）exercise in the morning because he must go to work at Seven o'clock，But he runs every evening．He（78）walksa lot too．He walks to his office every day and sometimes he plays badminton with（79）his friends after work．Mrs Rice goes to a yoga（瑜伽） class three times a week．（80）Butit isn't always this way．Last year Mr and Mrs Rice drove （81）everywhere．They thought they should use the（82）car all the time．Now the Rice don't use their car and they all （83）feelbetter．Now they think they mustn't be （84）lazy．And they think exercise is healthy for the （85）mind and the body．
