1.come from
2.collect information
3.interested in sth
4.living
5.be helpful to
6.for example
7.well know about sth
8.comunicate with each other
9,in a dangerous situation
10.write a article
1.come from
2.collect information
3.interested in sth
4.living
5.be helpful to
6.for example
7.well know about sth
8.comunicate with each other
9,in a dangerous situation
10.write a article