[ Grammar ]
It’s your __________ report any suspicious activities to the authorities.
A. make a profit
B. encourage
C. duty to
D. recommend

Random Topics:
Modal PossibilitiesGrammar - to beAdverb Clause ConnectorSimple TenseGrammar & VocabContrastive ConjunctionPossessive NounsCorrelative conjunctionsAdverbial Clause / If / ComparativesPresent Perfect Negative and InterrogativeOther quiz:
Grammar › ViewBe good ____ something
A. at
B. in
C. on
D. of
Grammar › View
I forgot to tell my mom where I would be after school.
A. This sentence is correct.
B. This sentence is incorrect.
A word that substitutes a noun or a noun phrase.
A. Adverb
B. Adjective
C. Interjection
D. Pronoun
E. Noun
Vocabulary and Grammar › View
It’s very hard to prevent the illegal downloading of _________.
A. files
B. property
C. litter
