3 Fill in the blanks with the words given below. Change the form where necessary. Each word can be used only once. embarrass polish emotional efficiency curb await donation dump stuff historical 1. He has a special feeling for the brilliant birds, and each spring he eagerly ________ their return. 2. Thanks to the ________ of air transport, everyone is free to go anywhere at any time. 3. John believes that the ________ of food to the hungry is more helpful than giving money. 4. Mary was a careful speaker; every word seemed to have been ________ before it was allowed to escape through her lips. 5. When she heard it was snowing in the city they were going to, she ________ two more sweaters into her bag. 6. During our stay in Europe we visited many places of ________ interest, including several castles. 7. The wedding ceremony of my sister was a very ________ experience for our family. 8. He was ________ when he discovered that he didn ’ t have enough money to pay for the red wine he had ordered. 9. The local government is pressed to find new places to ______ waste. 10. The new system designed to ________ harmful emission ( 排放物 ) from factories will be put into use soon.