How many pen do you have 错在哪

How many pen do you have 错在哪 How many pen do you have?为什么要加do?在什么情况下加do? _____ do you want for this pen?A.How many B.How much C.How long D.What how do you spell pen?同义词 how do you spell pen?怎么回答 How do you （s ）pen how do you spell pen?pen要加引号吗 how many ()do you have? How many fingers do you How many rulers do you how many oranges do you how many books do you HOW many do you wan How do you s____ pen?求正解How do you s____ pen?求正解 How often do you hear from youm your pen-friend How often do you hear from your pen friend? 上面那一道.how do you spell pen? “How do you spell pen?”的答句是什么?