1 Good friend is the person who can share happiness and sadness with you.
2 I will be in deep appreciation if you two can stop fighting and get along well with each other.
3 We have known about each other for a long time.
4 I stayed up late till 11pm. so as to enjoy the sight of the moon along.
5 With the help of friends, I finally finished the task.
6 We are good friends. I regard our friendship as the most import thing.
7 It's his first time to communicate with penfriend by E-mail.
8 Hobby will not make you feel bored. The more time you devote to it, the more happiness you will gain.
9 Network enables people from different corner of the world to communicate face-to-face.
10 As reported in the news, the accurate time of Chang'e-2 launch would depend on weather.