精选优质文档-倾情为你奉上Exercises of Derivation and Word spellingEX1. Complete the following sentences by adding a prefix to the words.1. Rose said that it was _fair if Dad gave me a dictionary but gave her only a diary.2. The mother _dressed the baby, then put him in a basin of warm water.3. Though he didnt win any medals in the last sports meet, he was not _couraged.4. Its _possible for anyone to finish the work within such a short time.5. Please dont _understand what I ha