Your pen pal ()() from the USA. A.isn't；come B.doesn't;come

Your pen pal ()() from the USA. A.isn't；come B.doesn't;come he doesn't come from the USA和he isn't from the USA的区别是什么? 对括号中的单词改错1.I (have) a pen pal (who) (come) from (the USA).2. He doesn't come from Beijing.助动词用doesn't 而不用isn't是不是因为come 是 句子成分划分:where does your pen pal come from He Wants to be a ba 为什么是Where does your pen pal come from,而不是Where do your pen p 首字母补单词1.Which c() does your pen pal come from?2.I want to b( 句子改错,（改单词下有字母的单词） 1.Where is your pen pal come from,Julie? A This pen ＿＿ well .A.isn’t written B.doesn’t write C.write D. 找句子中的错误1 where do your pen pal come form A为where B do C your A:Why doesn't Cindy come with us to the park?B:She has ____ doesn't come与didn't come