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是过去完成时可正确答案是A1.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 .AisBare 为什么答案选AThere 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?