You are going to read an article about rare stamps that were auctioned for charity in Berlin. Some words are missing from the text. Use the words in brackets to form the words that fit in the gaps. Then write the appropriate form of these words in the boxes. There might be cases when you do not have to change the word in brackets. Use only one word for each gap. When you have entered all your answers, cick on the button "Check answers". If you make a mistake, please try again until all your answers are correct.