In the box below are some of the expressions you have learned in this unit. Do you understand their meanings? Do you know how to use them in the proper context? Now check for yourself by doing the blank-filling exercise. Change the form where necessary. Text A at knifepoint expose ... to flag down pick up pull over rely on risk one’s life run contrary to take a gamble (on) Text B In rich contrast to pull away stand out 1.In this painting, a single red rose stands the grassland. 2.The factory workers poisonous gases and many of them suffer from lung diseases. 3. During the war, the soldier helping others to escape. 4.Do trust me. You can me to keep your secret. 5.If you are attacked or robbed , how would you react then? 6.She is such an extraordinary girl that she always in a crowd. 7.Obviously, this foolish idea common sense ( 常识 ) . 8.I was very tired and had to a taxi in order to get home early. 9.The mother her children from the kindergarten at 5:00 p.m. every day. 10.The publishers an unknown author, and the books have sold well. 11.The driver waved to us as he . 12.The driver to the side of the road to see what was wrong with his truck.