是by last term还是 by the last term

是by last term还是 by the last term by end of last term 和last term 什么区别呢?She must have studied very hard by end of last term,hadn't she ?She must have studied very hard last term,didn't she ? by the end of last term是过去完成时的标志词吗 truth真相可数吗?还有一题:By the end of the last term,we ______(study) three thousand words.是填had studied 还是 has studied? She often(A) goes(B) to work(C) by car(D) last term.错误的是--- 正确答案是------- John said to his parents,''I had learned 500 chinese words by the end of last term.''变为间接引语by the end of last term不用改成by the end of the term before吗? They----[learn] over 2000 English word by the end of last term. They___(learn)several French songs by the end of last term.填什么?为什么? By the end of last term they ________ over 1000wordsA have learnedB had learned By the end of last term,they ___(work)there for ten years.能讲出为什么吗 We had learned over three thousand words by the end of last term .改为同意句 By the end of last term,they (or ten years.原因! By the end of last term, they ___(work)there for ten years. By last term we ___ 2000 English wordsA、 have learned B、haf learned We ___(be) to three countries by the end of last term. These ____[ radios,radioes]wee made by the students thmselyes last term选择哪个 by sb.位置the food was cooked last night 如果要加个by John 应加在哪里啊.是was cokked by John last night.还是cooked last night by John 是by ourself还是by ourselves?