[ Grammar ]
Some of the world’s languages _____ because the last people to use those languages pass away.
A. has disappeared
B. has been disappearing
C. have disappeared
D. have been disappearing

Random Topics:
Coordinating & Subordinating ConjunctionsConjunctions and PronounsGrammar ClausesVerbs: Action, Linking, and HelpingContrastive ConjunctionsModals of AdviceVerb + InfinitiveModal Verbs for Permission and ObligationTOEIC Tenses, VerbsQuestion TagOther quiz:
Vocabulary › Viewan example that is used to justify similar occurrences.
A. jettison
B. preen
C. precedent
D. embezzle
Relative Pronouns and Adverbs › View
Which relative adverb best completes the sentence?
Do you know the reason _____ she is so upset?
A. when
B. where
C. why
Grammar › ViewIf it (rain)_________, the boys (not play)_______ football.
A. rains, won’t play
B. rains, don’t play
C. will rain, won’t play
D. rained, won’t play
Modal Auxiliary Verb › View
You … throw litter from your vehicle because it can pose a risk to the environment.
- mustn’t
- won’t