When you look up a word in a dictionary, see if you can form other words from it. Sometimes these words will be included in the definition of the word and sometimes they will appear separately. Look before and after each dictionnary entry to see what words you can find formed from the same basic word.Complete each sentence with the correct form of the word in capital letters. In some cases you will have to make a negative form by using the prefix 'in_' or 'un_'.