how many English words should advanced English learners learn?60000 or 40000 words?

--How many English words_________you__________(copy) how many english books canyon How many English bookscan you how many letters are there in “English”? How many letter are there in English? How many letters are there in English How many letter are they in english? how many ___are there in English alphabet? How many English songs have you sung? How many English _____ have you learnt How many letters are there in English(Answer in English) How many English books do you have?怎么回答 How many letters are there in English.的意思 How many letters are there in English?而且要有回答 books,many,English,can,how,see,you 连词成句 请教一道智力题：How many letters are there in English? 用现在完成时组句子:How many English words/you/learn How many native english teachers are here China?