同学你好，该知识点来自沪江网校《英语零基础直达大学六级【8月班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好：
Fishing (1.1); catching (11.1-2); catching (1.3); having spent(1.5); fishing (1.6); fishing ⋯ sitting (1.8); doing (1.9)
C
1 He went out of the restaurant without paying the bill.
2 She bought a pair of boots instead of getting a pair of shoes.
3 She was afraid of spending the night alone.
4 After hearing/having heard the news, she fainted.
5 Think carefully before answering my question.
6 On seeing the plane coming towards me, I dashed for cover.

1 realized 2 It's ⋯ understand ⋯ its
3 exciting 4 interesting （他是个有趣的人，形容人，用ing；形容词人的心情用ed）
5 exciting（形容物用ing） 6 interested

希望以上答案可以帮助到同学！
祝愿同学学习进步！