同学你好，该知识点来自沪江网校《新概念英语2、3、4册连读【双11专享班】》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~
Key to SD Exercises
1 wash up 2 laugh at
3 washed 4 laughed
5 wash
Key to Multiple choice questions
1 a 2 b 3 a 4 d
5 c 6 c 7 d 8 a
9 a 10 c 11 b 12 d
Key to Sentence structure
The fish, which has since been sent to a museum where it is
being examined by a scientist, is called an oarfish.

祝同学学习进步~