[ Tenses Usage ]
Before renewable energy became affordable, most industries _____ on fossil fuels.
A. relies
B. relied
C. had relied
D. rely
Select your answer:
Random Topics:
Future Simple TensePast Continuous and Past Simple TenseSecond Type ConditionalPresent Simple x Present ContinuousPhrase and Clause-ed or -ingIF CLAUSEDemonstrative PronounPassive Voice of TensesOther quiz:
Grammar › ViewHe doesn’t have ……. books
A. a little
B. many
C. much
D. little
Grammar › View
How long — biology? Since last year
A. did she study
B. will she study
C. has she studied