Topics: Vocabulary
Greenpeace is an international group that protests against anything which is a ____ to the environment.
A. threat
B. threaten
C. threatening
D. threatener
Select your answer:
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Linking VerbsSimple Present and Past TensesClause Markers TOEFL GrammarModals VerbTenses & AffixesSimple Tenses in EnglishThe First Conditional SentencePast TensesConjunctionReported Speech and TensesOther quiz:
Describing Words › View
Rex the dinosaur has __________ skin
A. pink
B. blue
C. orange
D. green
Vocabulary › View
Inopportune
A. Unplanned; spontaneous; impromtu
B. Stiff; rigid; pliant
C. Timely; convenient; felicitous
D. Adroit; dexterous; clever; masterful