[ Grammar ]
Our research measures the impact of_______ on this particular eco-system.
A. human activity
B. sea level
C. greenhouse gas
D. global warming

Random Topics:
Conditionals / Unreal PastFrequency Adverbsduring, for, whileSecond ConditionalsTenses and ArticlesComplex PrepositionsPresent SimpleWish - beginner-ed or -ingModals and Adjectives (ed-ing)Other quiz:
Grammar › ViewHas __________ seen my notebook?
A. anyone
B. whose
C. they
D. mine
Simple Past › View
WHAT IS THE SIMPLE PAST OF PLAY?
A. Played
B. Plaied
C. Pleyed
Comparatives - Superlatives › ViewShe always has a smile on her face. She is the ____________ person I know.
A. happy
B. happier
C. happiest
Tenses › View
Dr. Taviel ____________ free consultation services in September.
A. provided
B. provides
C. will provide
