1. The phrase "digital natives" refers to people who are familiar with computers and the internet from an early age.

2. The internet will motivate students to study more effectively

3. Please don't ask him questions about his family. He hates answering personal questions

4. Our students are very excited when they have opportunities to do physical exercise

5. My son, who is a promising pianist, is now interested in composing electronic music

6. Many teacher have now understood the benefits that mobile devices can bring

7. I'm looking for some new applications to put on my smartphone to improve my English pronunciation

8. The ringing sound from mobile phones is disruptive and annoying in the classroom

9. People are now familiar with the term m-learning or mobile learning,which focuses on the use of personal electric devices

10. In the grammar part of this unit we study relative clauses

11. That laptop, which has the latest technology,is very expensive

12. Some of my classmates think that it is not easy to know which clause is defining and which is non-defining