according to a single metric, the proportion of students taking college-level exams. Over the years this system has come in for its share of criticism for its simplicity. But that is also its strength: it’s easy for readers to understand, and to d...
13. By the time he arived at the stop, the 8 o’ clock bus___.So he had to wait for the next bus. A. was leaving B. left c. have left D. had left 14. They don’t believe she’ an engineer___? A. do they B. don t they с. does she D. doesn’t she 15...
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