选词填空。 in vain      at random      slow down      talk about      worry about     find out      a generation of at all costs      suffer from      out of breath 1.We must the customs of other countries,so that they will not think us ill mannered. 2.It took me only five minutes to get to school this morning.Of course I was made . 3.The market researchers interviewed people in the street. 4.Remember that you’ll have got to finish this job by tomorrow ! 5.Most of the important cities of the world traffic jam. 6.The police got close to the two men,trying to know what they were . 7.The girl decided to work in the west.Her parents tried to persuade her to change her mind. 8.A driver should when he comes to an area that is built up. 9.If it concerns anything outside your control,train yourself not it. 10.It takes ten years to grow a tree and a hundred years to bring up good men.