1. It's impolite to stare at/gaze at/the foreigners.
2. I'm quite conscious that I'll have to leave a good impression. (be aware of)
3 I'm not sure who will give away the awards in the meeting.
4. Can you do me a favor of downloading a song.
5. You should be deeply involved in the activities in the school to make more friends.
6. Concerning this issue, people vary in their view point.
7. No matter how late you arrive, I will comm to the airport to meet you.
8. Colored pictures can hold students' interest.
9. Once a bad habbit is developped, it is hard to get rid of.
10. The news spread that the president resigned.