[ Vocabulary & Grammar ]
Burning _________ will lead to release of carbon dioxide in huge amounts.
A. oil spill
B. fossil fuels
C. toxic waste
D. acid rain

Random Topics:
Verbs + Infinitives / GerundsQuantifiersSimple Present Continuous TenseAsking for and Giving OpinionPersonal Pronouns and VerbHave toPassive Voice Active VoiceModals and PhrasesVerb Types and TensesTransition WordsOther quiz:
Some vs. Any › ViewDo you have ___ brothers and sisters?
… a.a
… b.an
… c.some
… d.any
Tenses › View
While Nora _______ reading a book, her brothers played chess.
A. is
B. are
C. was
D. were
Grammar › ViewHe has _____ idea.
A. a
B. an
Past Perfect and Past Perfect Continuous Tense › View
What are the auxiliary verbs of the past perfect continuous tense?
A. has been
B. had been
C. was being
D. have been
