1. Having chosen family television programs and women’s magazines, the toothpaste marketer, for instance, must select the exact television programs and stations as well as the specific women’s magazines to be used.

2. I can’t live in fear of the possibility that as the earth’s population grows and we use more and more of our nonrenewable resources, our children may have to lead poorer lives.

3. His journey to the e-mail hell began innocently enough when, as chairman of Computer Associates International, a software company, he first heard how quickly his employees had accepted their new electronic-mail system.

4. Although he was tired, he continued to work.

5. Because it was raining, they stayed inside.

6. Since she is allergic to peanuts, she cannot eat them.

7. That what caused the accident is not known to us.

8. How the building was ruined Which road I should choose/take Whether/if Whether it will rain or not tonight.

9. Most of us don’t agree with his view that there is no advantage in introducing the new method.

10. Is he a cell phone？

11. I am the guy who can overcome difficulties.

12. The two major languages were Celtic and Old English.

13. The majority of the students passed the exam.

14. Not only did he explain quickly, but also he was very enthusiastic about sharing his knowledge.

这些句子包含了多种从句和短语，如名词性从句、状语从句、定语从句等，结构较为复杂。通过学习和练习，可以更好地理解和掌握这类句子的结构和用法。