1 . Using such techniques, the opera had _______ (变成) a small stage into the whole universe. (根据汉语提示单词拼写)
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2 . By the time of his death in 1884, he ___________ (make) important discoveries. (所给词的适当形式填空)
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3 . By the time Mr Wang returned home from Beijing, his son’s wedding _______.
A.ended | B.has ended | C.had been ending | D.had ended |
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