academic
biologist
book
books
boy
chemical
chemist
chemistry
college
couch
education
educational
exam
examination
exams
hardworking
home
homework
house
knowledge
learn
learning
looking
man
model
molecular
molecule
physicist
physics
preparation
preparing
reading
research
researcher
revising
revision
school
science
scientific
scientist
sitting
smart
sofa
student
study
studying
textbook
textbooks
university
young