[ Tenses Usage ]
Before renewable energy became affordable, most industries _____ on fossil fuels.
A. relies
B. relied
C. had relied
D. rely

Random Topics:
Grammar (Adjectives)PrepositionBASIC GRAMMAR - PRONOUNSIndefinite and Reflexive PronounsVocabullary TestQuestion TagConditional Sentence Type 0-3Prepositional PhrasesDEGREE COMPARISONCoordinating & Subordinating ConjunctionsOther quiz:
Conjunctions › ViewThe builders have not __________ started to lay the bricks.
A. yet
B. if
C. for
Grammar › View
Vocabulary: Choose two words that can follow each word:
A. keep alive, keep fit
B. take a belief, take alive
C. make messages, make money
D. post your way , post a refund
Grammar › ViewIf your room ______________ (need) painting, what color would you choose?
A. needed
B. didn’t need
C. need
D. needing
Adverbs of Time › View
Identify the adverb of time:
Michelle will arrive any moment now.
A. will
B. now
C. arrive
