单项选择题

A. Three years ago. B. For three years.
C. Maybe in three years. D. No, only three years.
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单项选择题
A. She’s sick. B. She’s fired. C. She quarreled with her boss. D. She received a warning from her boss.
A. She’s sick. B. She’s fired.
C. She quarreled with her boss. D. She received a warning from her boss.
单项选择题
Never before ______ so highly successful in changing his surroundings.
A. man has been
B. man is
C. has man been
D. is man
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