book

books

cell

cells

class

classmate

college

cute

decide

deciding

educate

education

female

fingers

girl

girls

grade

hands

holding

indoors

knowledge

learn

lesson

mobile

pen

phone

phones

process

pupil

room

school

schoolchild

schoolgirl

schoolgirls

secondary

serious

sitting

smartphone

solve

solving

studying

table

task

teenager

textbook

thinking

two

writing

young