A. Pure
B. Polluted
C. Dust
D. Pleasant
A. that
B. when
C. if
D. how
A. however
B. but
C. because
D. so
A. works
B. will work
C. worked
D. would work
A. about
B. on
C. of
D. for
A. serious injured
B. injure seriously
C. seriously injured
D. injured seriously
A. recently
B. never
C. late
D. recent
A. play / study
B. playing / study
C. play / studying
D. playing / studying
A. decline
B. rebut
C. deny
D. accept
A. be partly responsible for
B. disapprove
C. neglect
D. cause
A. agreed
B. refused
C. approved
D. avoided
A. afforestation
B. reforestation
C. logging
D. lawn mowing
A. very good
B. very bad
C. normal
D. long-lasting
A. intake
B. retake
C. uptake
D. discharge
A. sureties
B. certainties
C. dangers
D. safety
A. clear evidence
B. deny
C. having dump
D. into the sea
A. These companies
B. accused on
C. having released
D. into the atmosphere
A. Having denied
B. responsibility
C. environmental
D. was forced to
A. Having been warn
B. between climate change
C. the spread of infectious diseases
D. get vaccinated
A. have to
B. effects of global warming
C. due to
D. treat the environment
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