[ Vocabulary ]
Using renewable energy instead of non-renewable one is of the most effective ______ methods.
A. energy-saving
B. energy-saved
C. to-save-energy
D. saving-energy

Random Topics:
Grammar and VocabulariesCorrelative Conjunction & Complex SentencesPrepositionGrammar - Present and Past PassiveImperative SentencesSubordinating and Coordinating ConjunctionsAdjectives and ArticlesPast Perfect Tense and Past TenseVocabulary, Grammar, SpellingGrammar: Simple Past and Past ContinuousOther quiz:
Vocabulary › ViewBeyonce is an _____ pop singer.
A. iconic
B. venomous
C. nocturnal
D. unfettered
Present Tenses › View
Fill in the blanks with present perfect/past simple I ________ (catch) a cold in school a few days ago and _____ (be) ill ever since.
A. caught, have been
B. caught, was
C. have caught, have been
D. have caught, was
Relative Clause › ViewHe arrived with a friend ______ waited outside in the car.
A. whom
B. which
C. who
D. whose
Perfect Tenses › View
The villagers _______________ the old man’s house.
A. have repaired
B. has repaired
C. had repair
D. had repaired
