[ Definite vs Zero Article Abstract Nouns ]
___ alternative energies that have been most recently developed are superior to previous ones.
A. the
B. (-)

Random Topics:
InfinitivesPreposition and Preposition PhraseSimple Present Continuous TensePreposition of DirectionAdverb Clause ConnectorNarrative TensesBe going to / WillPunctuationConjunctions and PrepositionSimple Present and Simple PastOther quiz:
Perfect Tenses › ViewLook at this wall. Someone _______________ (paint) a beautiful picture on it.
A. had painted
B. was painted
C. has painted
D. had been painted
Tenses › View
They _____ to Africa next Friday.
A. are going
B. are going to go
C. have gone
D. will go
Grammar › ViewI ______ read a book last month.
A. didn’t
B. did
C. walked
D. listened
Grammar › View
Mary reached there at dawn. /Spacial question/
A. Who reached there at dawn?
B. Who reach there at dawn?
