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By the end of last term they ________ over 1000words

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By the end of last term they ________ over 1000words
A have learned
B had learned
By the end of last term they ________ over 1000words
By the end of last term ,表明发生在过去并且完成,应该用过去完成时,选B,A是现在完成时,B是过去完成时
再问: 可正确答案是A
再答: 1.By the end of last term , we had learned 3000 words . 到上学期未,我们己经学了3000个单词。 2.We had learned 2000 English words by the end of last term . 到上学期期末为止,我们已经学了2000个英语单词。 3.How many English parties had you had by the end of last term ? 到上学期末。你们举行了几次英语晚会?。 这是查找的例句,答案应该错了
再问: had you had by the end of last term ? 我觉得第2个Had 要改为have。。。 另外,再问你一个问题: There _________a lot of things to do . A is B are 为什么答案选A
再答: There are a lot of things to do有许多事要做 答案选B,你的答案应该错了吧?