[ 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:
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