Cross them out with one color of marker. Students then cross out the same nouns on their paper and replace the nouns with their own nouns. After you have completed a lesson on verbs, do the same thing. Cross out the verbs on the master copy. Ask for volunteer verbs and add them above the crossed out verbs.
Students do now have to have a specific idea in mind.
Continue with whatever parts of speech you want to teach or review. I change or substitute pronouns and then, using an insertion mark, add adjectives before each noun and adverbs either before or after each verb, adjective, or adverb. Their poems take on a very professional sound which impresses them as well as reviews important uses of parts of speech and development of sentence structure. Deep in the murky waters, the lively croaking frogs bellow so loud Dainty water striders are swiftly retreating from them and from others. Net sm .