1. Can I my laptop (笔记本) the Intranet (内联网)?

2. He has planned for his eldest son to his business when he is 65.

3. Knowledge is an increasingly important in the economic development.

4. taking care of her 3-year-old son, she has taken 3 online courses in marketing, business communication and economics.

5. The practice of online learning as more and more people have access to the Internet.