8. Each family asked to plant a tree before summer came. A. were B. was C. are D. is 9. By the end of the last term, they___ all their course work. A. have completed B. had completed C. complete D. are completing 10...
By the end of last year, my father had worked in the factory for twenty years. 去年年底时,爸爸已经在工厂工作二十年了。( had worked 已有了 20 年,还有继续进行下去的可能) By six o’clock he had worked eleven hours. 到6点钟时他就已经工作了11小时。
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