第3题: [单项选择]At last she left her house and got to the airport, only ______ the plane flying away. A. having seen B. to have seen C. saw D. to see 参考答案:D 答案解析:[解析] 根据题干,后一分句的动作发生在主句之后,而不是之前,由此排除[A]和[B]。又因为题干中没有出现关联词,故排除[C]。由此可知答案为[D],only和动词不定式连用,作结果状语,表示一种出入