问题补充:
In later years, people reported a monster swimming across the lake.
A. to see
B. have seen
C. seeing
D. to have seen
答案:
A. to see
B. have seen
(答案→)C. seeing
D. to have seen
解析:考察report的用法。该处report意为报告, report doing sth,
句意为后来几年,人们报告说看到一个怪物横游这个湖。