19.How many English songs you _ by the end of last

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19.How many English songs ____ you _____ by the end of last term?
A.have,learned B.did,learn C.had,learned D.were,learned
为什么?
再讲一下过去完成时

C
by+一段时间要用完成时
又是过去的时间前面要用过去完成时
过去完成时就是在过去的某一个时间之前动作已经完成
这句话的意思是到上个学期期末为止,你已经学了多少英语歌曲

19.How many English songs ____ you _____ by the end of last How many English words （）you（）（learn）by the end of last term How many English parties had you had by the end of last term How many English words you by the end of last year? How many English words have you learned by the end of last t By the end of last term,we _____ about twenty English songs How many english songs had you learned________the end of las How many pages have you read by the end of last year? How many English songs ____ you ____(study) this term? How mang pages have you read by the end of last year?改错 By the end of last year he______about 1500 English words. I _____1000 english words by the end of last term