[ TOEFL Adjective and Adverb ]
. . . . chief advantage of renewable energy sources is their sustainibilty
A. By the
B. The
C. It is the
D. That the

Random Topics:
like/do not likeAdjectives & PrepositionsAdverbGrammar - Verb FormsIndependent/Dependent Clauses & Relative ClausesComperative and SuperlativeVerb to haveSimple Present Tense vs Present Continuous TenseAdjective / Noun + to InfinitiveConjunctions, Interjections and Sentence TypeOther quiz:
Present and Future Tenses › View____________ the university’s dining hall____________ new menu options this semester?
A. Do / offer
B. Does / offer
C. Are / offering
D. Is / offering
Grammar › View
Five actors will take ………………………. of Meet & Greet with their fans in the Mall.
A. place
B. participate
C. an interview
D. part
Modal Verbs › ViewHe ___ be Ann’s brother. They look like twins.
A. must
B. may
C. might
D. should
Simple Past Tense › View
She studied Spanish and Greek when she was at university.
A. True
B. False
