50

1) pass through this stage
2) impertinent/cheeky
3) clumsy or awkward
4) lose
5) (to be) scared of being bullied or rejected
6) peers
7) by self-confident
8) to treat as like children
9) high and low self-esteem
10) to cool off
11) famous people
12) to become a net addict
13) to waste
14) to neglect school
15) to meet sb halfway
16) socialize
17) looks/appearance
18) social evil
19) gambling
20) attitude