Unit 6 How many? (Part B Start to read,eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen,twenty,How many _ do you have/see? I have /see_,How many _do you have/see? I have/see_,balloons,How many _do you have/see? I have/ see_,19,How many _do you have/see? I have/see_,17,How many _ do you have/see? I have/see _,18,How many _ do you have/see? I have /see_,16,How many _ do you have/see? I have /see_,同学们,你们养过