Question

78. A skyscraper has been built in the place where there was a factory. （转换成含地点状语从句的复合句）

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79. The students all passed the exam with the teacher’s efforts. （用虚拟语气改写句子）

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80. The girl was spoken highly of. Her speech was persuasive. （用定语从句合并句子）

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81. I didn’t realize the danger until I heard the cry nearby. （将not until置于句首改写句子）

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Answer 1

78. A skyscraper has been built where there was a factory.

79. But for / Without the teacher’s efforts, the students wouldn’t have passed the exam.

   If it had not been for the teacher’s efforts, the students wouldn’t have passed the exam.

Had it not been for the teacher’s efforts, the students wouldn’t have passed the exam.

80. The girl whose speech was persuasive was spoken highly of.

81. Not until I heard the cry nearby did I realize the danger.