Group 1
make sure something or somebody is not harmed, or damaged
protect
dangerous
risky
to make something
create
enjoyable;happy
pleasant
how fast of somenthing
speed
big-small; on the contrary
opposite
to achieve something
succeed
a person who travels around an area or country to learn about it
explorer
confident
a person with special knowledge or skills
expert
people who take risks
risk takers
person who does scientific study of the mind
psychologist
dopamine is a kind of substance
chemical
connected with a job that needs special training or skill, especially one that needs a high level of education
professional
be connected with
be related to
reach what you planned
achieve a goal
sportsman who take risky sports
extreme athlete
typical feature or quality that sth./sb. has
characteristic
person who takes an active part in the protection of the environment
conservationist
a trip has a special goal
expedition
I have never tried bungee jumping, but I want to ________ myself this time.
challenge
Did you ____________ anyone in the building?
encounter
This is helpful for students from school's _______________.
perspective
A _________ young woman is living next door. Nobody knows her.
mysterious
Do you have any previous _____________ of this type of work?
experience