同学你好，该知识点来自沪江网校《零基础直达BEC商务英语高级【寒假签约班】》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。

同学好，
第一篇：
1.They dressed...so that they couldn’t be recognized by anyone.
2.camping couldn’t be allowed.
3.Even when they told...
第二篇：
1.……so we drove into...
2.....,we unpacked hampers to enjoy.
第三篇：
1.wasps拼写
2....were flying around the cake.
3.Though we made great efforts to...,but（but去掉）....
4.After returning to...
祝学习愉快～